Rushton, A.W.A., Owen, A.W., Owens, R.M. & Prigmore, J.K. 2000. British Cambrian to Ordovician Stratigraphy. Geological Conservation Review Series No. 18, JNCC, Peterborough, ISBN 1 86107 4727. The original source material for these web pages has been made available by the JNCC under the Open Government Licence 3.0. Full details in the JNCC Open Data Policy
References
In this reference list the arrangement is alphabetical by author surname for works by sole authors and dual authors. Where there are references that include the first-named author with others, the sole-author works are listed chronologically first, followed by the dual author references (alphabetically) followed by the references with three or more authors listed chronologically. Chronological order is used within each group of identical authors.
Addison, R. (1974) The biostratigraphy of the Llandeilo facies of south Wales. Unpublished PhD thesis, Queen's University, Belfast.
Aldridge, R.J., Siveter, David J., Siveter, Derek J. et al. (in press) British Silurian Stratigraphy, GCR Series No. 19, Joint Nature Conservation Committee, Peterborough.
Allen, J.R.L. (1968) The Cambrian and Ordovician systems. In The Geology of the East Midlands (eds P.C. Sylvester-Bradley and T.D. Ford), Leicester University Press, pp. 20–40.
Allen, P.M. and Cooper, D.C. (1986) The stratigraphy and composition of the Latterbarrow and Redmain sandstones, Lake District, England. Geological Journal, 21, 59–76.
Allen, P.M. and Jackson, A.A. (1978) Bryn-teg Borehole, North Wales. Bulletin of the Geological Survey of Great Britain, 61, 51 pp.
Allen, P.M. and Jackson, A.A. (1985) Geology of the Country around Harlech. Memoir of the British Geological Survey, Sheet 135 with part of 149 (England and Wales), HMSO, London.
Allen, P.M., Jackson, A.A. and Rushton, A.W.A. (1981) The stratigraphy of the Mawddach Group in the Cambrian succession of North Wales. Proceedings of the Yorkshire Geological Society, 43, 295–329.
Anderson, F.W. and Pringle, J. (1946) On a section of the Balclatchie Beds at Craighead Quarry near Girvan, Ayrshire. Geological Magazine, 83, 172–6.
Andrew, A.R. (1910) The geology of the Dolgelley gold-belt, North Wales. Geological Magazine, Decade 5, 7, 159–71, 201–11, 261–71.
Armstrong, H.A. and Coe, A.L. (1997) Deep-sea sediments record the geophysiology of the late Ordovician glaciation. Journal of the Geological Society, London, 154, 929–34.
Armstrong, H.A., Clarkson, E.N.K. and Owen, A.W. (1990) A new Lower Ordovician conodont faunule from the Northern Belt of the Southern Uplands. Scottish Journal of Geology, 26, 47–52.
Armstrong, H.A., Owen, A.W., Scrutton, C.T., Clarkson, E.N.K. and Taylor, C.M. (1996) Evolution of the Northern Belt, Southern Uplands: implications for the Southern Uplands controversy. Journal of the Geological Society, London, 153, 197–205.
Armstrong, H.A., Owen, A.W. and Floyd, J.D. (1999) Rare earth geochemistry of Arenig cherts from the Ballantrae ophiolite and Leadhills Imbricate Zone, southern Scotland — implications for origin and implications to the Caledonian orogeny. Journal of the Geological Society, London, 156, 549–60.
Arthurton, R.S. and Wadge, A.J. (1981) Geology of the Country around Penrith. Memoir of the British Geological Survey, Sheet 24 (England and Wales), HMSO, London.
Arthurton, R.S., Johnson, E.W. and Mundy, D.J.C. (1988) Geology of the Country around Settle. Memoir of the British Geological Survey, Sheet 60 (England and Wales), HMSO, London.
Aveline, W.T. (1857) Geological Survey of Great Britain (England and Wales), 1:63 360 Old Series Geological Sheet 41.
Aveline, W.T. and Hughes, T.McK. (1872) The Geology of the Country around Kendal, Sedbergh, Bowness and Tebay. Memoir of the Geological Survey of Great Britain, Quarter Sheet 98NE, HMSO, London.
Aveline, W.T. and Hughes, T.McK. (1888) The Geology of the Country around Kendal, Sedbergh, Bowness and Teba, Memoir of the Geological Survey of Great Britain, Quarter Sheet 98NE (2nd edn, revised by A. Strahan), HMSO, London.
Baker, J.W. and Hughes, C.P. (1979) Summer (1973) Field Meeting in central Wales, 31 August to 7 September 1973. Proceedings of the Geologists' Association, 90, 65–79.
Baldock, J.W. (1991) Geology of the Hartshill and Stockingford District, Nuneaton. British Geological Survey, Technical Report, WA/91/60.
Bancroft, B.B. (1928a) On the unconformity at the base of the Ashgillian in the Bala district. Geological Magazine, 65, 484–93.
Bancroft, B.B. (1928b) The Harknessellinae. Memoirs and Proceedings of the Manchester Literary and Philosophical Society, 72, 173–96.
Bancroft, B.B. (1929a) Some new species of Cryptolithus (s.l.), from the Upper Ordovician. Memoirs and Proceedings of the Manchester Literary and Philosophical Society, 73, 67–98.
Bancroft, B.B. (1929b) Some new genera and species of Strophomenacea from the Upper Ordovician of Shropshire. Memoirs and Proceedings of the Manchester Literary-and Philosophical Society, 73, 33–65.
Bancroft, B.B. (1933) Correlation-tables of the Stages Costonian–Onnian in England and Wales, Blakeney, Gloucestershire (privately printed).
Bancroft, B.B. (1945) The brachiopod zonal indices of the stages Costonian to Onnian in Britain. Journal of Paleontology, 19, 181–252.
Bancroft, B.B. (1949) Upper Ordovician trilobites of zonal value in South-east Shropshire (ed. A. Lamont). Proceedings of the Royal Society, Series B 136, 291–315.
Barber, A.J. and Max, M.D. (1979) A new look at the Mona Complex (Anglesey, North Wales). Journal of the Geological Society, London, 136, 407–432.
Barnes, C.R. and Williams, S.H. (1988) Conodonts from the Ordovician–Silurian boundary stratotype, Dob's Linn, Scotland. Bulletin of the British Museum of Natural History (Geology), 43, 31–9.
Barrande, J. (1852). Système silurien du centre de la Bohême. 1ère partie, Crustacés, Trilobites, 1. Prague, Paris, 935pp.
Bassett, D.A. and Walton, E.K.A. (1960) The Hell's Mouth Grits: Cambrian greywackes in St Tudwal's Peninsula, North Wales. Quarterly Journal of the Geological Society, London, 116, 85–110.
Bassett, D.A., Ingham, J.K. and Wright, A.D. (1974) Ordovician System Symposium Birmingham 1974. Field Excursion Guide to Type and Classical Sections in Britain. Palaeontological Association, London, 66 pp.
Bassett, D.A., Whittington, H.B. and Williams, A. (1966) The stratigraphy of the Bala district, Merionethshire. Quarterly Journal of the Geological Society, London, 122, 219–71.
Bassett, M.G. (1979) 100 years of Ordovician geology. Episodes, for 1979 (2), 18–21.
Bassett, M.G. (1981) The Ordovician brachiopods of Cornwall. Geological Magazine, 118, 647–64.
Bassett, M.G. (1982) Ordovician and Silurian sections in the Llangadog–Llandilo area. In Geological Excursions in Dyfed, South-west Wales (ed. M.G. Bassett), National Museum of Wales, Cardiff, pp. 271–87.
Bassett, M.G. (1985) Towards a 'Common Language' in stratigraphy. Episodes, 8, 87–92.
Bassett, M.G. and Owens, R.M. (1996) Discussion on a revision of Ordovician Series and Stage definitions in the historical type area. Geological Magazine, 133, 767–70.
Bassett, M.G., Owens, R.M. and Rushton, A.W.A. (1976) Lower Cambrian fossils from the Hell's Mouth Grits, St Tudwal's Peninsula, North Wales. Journal of the Geological Society, London, 132, 623–44.
Bassett, M.G., Wright, A.D. and Duff, P.McL.D. (1992) Ordovician. In Geology of England and Wales (eds P.McL. D. Duff and A.J. Smith), The Geological Society of London, pp. 63–145.
Batchelor, R. and Weir, J.A. (1988) Metabentonite geochemistry: magmatic cycles and graptolite extinctions at Dob's Linn, southern Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 79, 19–41.
Bates, D.E.B. (1963) A lower Ordovician gastropod from Anglesey. Geological Magazine, 100, 258–9.
Bates, D.E.B. (1968a) On 'Dendrocrinus' cambriensis Hicks, the earliest known crinoid. Palaeontology, 11, 406–9.
Bates, D.E.B. (1968b) The Lower Palaeozoic brachiopod and trilobite faunas of Anglesey. Bulletin of the British Museum of Natural History (Geology), 16, 127–99.
Bates, D.E.B. (1969) Some early Arenig brachiopods and trilobites from Wales. Bulletin of the British Museum of Natural History (Geology), 18, 1–28.
Bates, D.E.B. (1972) The stratigraphy of the Ordovician rocks of Anglesey. Geological Journal, 8, 29–58.
Bates, D.E.B. (1974) The structure of the Lower Palaeozoic rocks of Anglesey with special reference to faulting. Geological Journal, 9, 39–60.
Beckly, A.J. (1985) The Arenig Series in North Wales. Unpublished PhD thesis, British Museum (Natural History) and Imperial College, London.
Beckly, A.J. (1987) Basin development in North Wales during the Arenig. Geological Journal, 22, 19–30.
Beckly, A.J. (1988) The stratigraphy of the Arenig Series in the Aberdaron to Sarn area, western USTI, North Wales. Geological Journal, 23, 321–37.
Beckly, A.J. and Maletz, J. (1991) The Ordovician graptolites Azygograptus and Jishougraptus in Scandinavia and Britain. Palaeontology, 34, 887–925.
Begg, J.L. (1946) Some new fossils from the Girvan district. Transactions of the Geological Society of Glasgow, 21, 29–47.
Bell, B.R. and Harris, J.W. (1986) An Excursion Guide to the Geology of the Isle of Skye, Geological Society of Glasgow, 317 pp.
Belt, T. (1867a) On some new trilobites from the Upper Cambrian rocks of North Wales. Geological Magazine, 4, 294–5.
Belt, T. (1867b) On the 'Lingula Flags', or 'Festiniog Group' of the Dolgelly. District. Parts I, II. Geological Magazine, 4, 493–5, 536–43.
Belt, T. (1868) On the 'Lingula Flags', or 'Festiniog Group' of the Dolgelly District. Part III. Geological Magazine, 5, 5–11.
Bengtson, S. (1977) Aspects of problematic fossils in the Early Palaeozoic. Acta Universitatis Upsaliensis, 415, 71 pp.
Berg-Madsen, V.S. (1985) The middle Cambrian of Bornholm, Denmark: a stratigraphical revision of the lower alum shale and associated anthraconites. Geologiska Foreningens i Stockholm Förhandlingar, 106, 357–76.
Bergström, S.M. (1964) Remarks on some Ordovician conodont faunas from Wales. Acta Universitatis Lundensis, Section II, 3, 1–66.
Bergström, S.M. (1971) Conodont biostratigraphy of the Middle and Upper Ordovician of Europe and eastern North America. In Symposium on Conodont Biostratigraphy (eds W.C. Sweet and S.M. Bergström), Memoir of the Geological Society of America, 127, 83–161.
Bergström, S.M. (1990) Biostratigraphic and biogeographic significance of Middle and Upper Ordovician conodonts in the Girvan succession, south-west Scotland. Courier Forschungsinstitut Senckenberg, 118, 1–43.
Bergström, S.M. and Orchard, M.J. (1985) Conodonts of the Cambrian and Ordovician systems from the British Isles. In A Stratigraphical Index of Conodonts (eds A.C. Higgins and R.L. Austin), Ellis Horwood, Chichester, for the British Micropalaeontological Society, pp. 32–67.
Bergström, S.M., Rhodes, F.H.T. and Lindstrom, M. (1987) Conodont biostratigraphy of the Llanvirn–Llandeilo and Llandeilo-Caradoc series boundaries in the Ordovician System of Wales and the Welsh Borderland. In Conodonts: Investigative Techniques and Applications (ed. R. Austin), Ellis Horwood, Chichester, pp. 294–315.
Bevins, R.E., Bluck, Brenchley, P.J. et al. (1992) Ordovician. In Atlas of Palaeogeography and Lithofacies (eds J.C.W. Cope, J.K. Ingham and P.F. Rawson), Geological Society of London, Memoir 13, 19–36.
Binstock, J. (1977) Turbidite sedimentation in the Cambrian of North Wales [abstract]. Bulletin of the American Association of Petroleum Geologists, 61, 767.
Black, W.W, Bulman, O.M.B., Hey, R.W. and Hughes, C.P. (1971) Ordovician stratigraphy of Abereiddy Bay, Pembrokeshire. Geological Magazine, 108, 546–8.
Blake, D.B. (1994) Re-evaluation of the Palasteriscidae Gregory, 1900, and the early phylogeny of the Asteroidea (Echinodermata), Journal of Palentology, 68, 123–134.
Blake, J.F. (1888) On the Cambrian and associated rocks in north-west Caernarvonshire. Quarterly Journal of the Geological Society, London, 44, 271–90.
Blake, J.F. (1892) On the rocks mapped as Cambrian in Caernarvonshire. Quarterly Journal of the Geological Society, London, 48, 243–61.
Blake, J.F. (1893) On the felsites and conglomerates between Bethesda and Llanllyfni, North Wales. Quarterly Journal of the Geological Society, London, 49, 441–65.
Bland, B.H. and Goldring, R. (1995) Teichichnus Seilacher 1955 and other trace fossils (Cambrian?) from the Charnian of Central England. Neues Jahrbuch für Geologie and Paläontologie, Abhandlungen, 195, 5–23.
Bluck, B.J. (1983). Role of the Midland Valley of Scotland in the Caledonian orogeny. Transactions of the Royal Society of Edinburgh: Earth Sciences, 74, 119–36.
Bluck, B.J. (1984) Pre-Carboniferous history of the Midland Valley of Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 75, 275–95.
Bluck, B.J. (1985) The Scottish paratectonic Caledonides. Scottish Journal of Geology, 21, 437–64.
Bluck, B.J. (1992) The Ballantrae Complex. In Geological Excursions around Glasgow and Girvan (eds J.D. Lawson and D.S. Weedon), Geological Society of Glasgow, pp. 309–18.
Bluck, B.J. (1995) W.Q. Kennedy, the Great Glen Fault and strike-slip motion. In Milestones in Geology (ed. M. J. LeBas), Geological Society of London, Memoir 16, 57–65.
Bluck, B.J. and Ingham, J.K. (1992a) Dow Hill, Byne Hill and Ardmillan Braes. In Geological Excursions around Glasgow and Girvan (eds J.D. Lawson and D.S. Weedon), Geological Society of Glasgow, pp. 366–77.
Bluck, B.J. and Ingham, J.K. (1992b) The Girvan–Ballantrae Complex. In Geological Excursions around Glasgow and Girvan (eds J.D. Lawson and D.S. Weedon), Geological Society of Glasgow, pp. 301–6.
Bluck, B.J. and Lawson, J.D. (1992) Aberfoyle district. In Geological Excursions around Glasgow and Girvan (eds J.D. Lawson and D.S. Weedon), Geological Society of Glasgow, pp. 130–40.
Bluck, B.J., Gibbons, W and Ingham, J.K. (1992) Terranes. In Atlas of Palaeogeography and Lithofacies (eds J.C.W. Cope, J.K. Ingham and P.F. Rawson), Geological Society of London, Memoir, 13, 1–4.
Bluck, B.J., Ingham, J.K., Curry, G.B. and Williams, A. (1984) Stratigraphy and tectonic setting of the Highland Border Complex. Transactions of the Royal Society of Edinburgh: Earth Sciences, 75, 124–33.
Bluck, B.J., Ingham, J.K. and Tanner, P.G. (1997). The Highland Border controversy: a discussion of "New evidence that the Lower Cambrian Leny Limestone at Callander, Perthshire, belongs to the Dalradian Supergroup, and a reassessment of the 'exotic' status of the Highland Border complex". Geological Magazine, 134, 563–70.
Bose, P.K. (1983) A reappraisal of the conditions of deposition of the Maentwrog Beds (Upper Cambrian) at Porth Ceiriad, North Wales. Geological Magazine, 120, 73–9.
Bouma, A.H. (1962) Sedimentology of some Flysch Deposits, Elsevier, Amsterdam, 169 pp.
Bowie, S.H.U., Dawson, J., Gallagher, M.J. et al. (1966) Potassium-rich sediments in the Cambrian of Northwest Scotland. Transactions of the Institution of Mining and Metallurgy (Section B), 75, B125–45.
Brand, P.J. (1965) New Lower Cambrian fossil localities in North-west Scotland. Scottish Journal of Geology, 1, 285–7.
Brasier, M.D. (1977). An early Cambrian chert biota and its significance. Nature, 268, 719–20.
Brasier, M.D. (1984) Microfossils and small shelly fossils from the Lower Cambrian Hyolithes Limestone at Nuneaton, English Midlands. Geological Magazine, 121, 229–53.
Brasier, M.D. (1986) The succession of small shelly fossils (especially conoidal microfossils) from English Precambrian–Cambrian boundary beds. Geological Magazine, 123, 237–56.
Brasier, M.D. (1989) Sections in England and their correlation. In The Precambrian–Cambrian Boundary (eds J.W. Cowie and M.D. Brasier), Oxford University Press, pp. 82–104.
Brasier, M.D., Hewitt, R.A. and Brasier, C.J. (1978) On the Late Precambrian–Early Cambrian Hartshill Formation of Warwickshire. Geological Magazine 115, 21–36.
Brasier, M.D., Anderson, M.M. and Corfield, R.M. (1992a) Oxygen and carbon isotope stratigraphy of early Cambrian carbonates in southeastern Newfoundland and England. Geological Magazine, 129, 265–79.
Brasier, M.D., Ingham, J.K. and Rushton, A.W.A. (1992b) Cambrian. In Atlas of Palaeogeography and Lithofacies (eds J.C.W. Cope, J.K. Ingham and P.F. Rawson), Geological Society of London, Memoir, 13, pp. 13–18.
Brasier, M.D., Cowie, J.W. and Taylor, M.E. (1994) Decision on the Precambrian–Cambrian stratotype. Episodes, 17, 3–8.
Brenchley, P.J. (1984) Late Ordovician extinctions and their relationship to the Gondwana glaciation. In Fossils and Climate (ed. P.J. Brenchley), John Wiley, Chichester, pp. 291–315.
Brenchley, P.J. (1988) Environmental changes close to the Ordovician–Silurian boundary. Bulletin of the British Museum of Natural History (Geology), 43, 377–85.
Brenchley, P.J. and Cullen, B. (1984) The environmental distribution of associations belonging to the Hirnantia fauna — evidence from North Wales and Norway. In Aspects of the Ordovician System (ed. D.L. Bruton), Paleontological Contributions from the University of Oslo, 295, pp. 113–25.
Brenchley, P.J. and Newall, G. (1982) Storm-influenced inner shelf sand lobes in the Caradoc (Ordovician) of Shropshire (England). Journal of Sedimentary Petrology, 52, 1257–69.
Brenchley, P.J. and Pickerill, R.K. (1980) Shallow subtidal sediments of Soudleyan (Caradoc) age in the Berwyn Hills, North Wales, and their palaeogeographic context. Proceedings of the Geologists' Association, 91, 177–94.
Brenchley, P.J. and Pickerill, R.K. (1993) Animal–sediment relationships in the Ordovician and Silurian of the Welsh Basin. Proceedings of the Geologists' Association, 104, 81–93.
Bridge, D.McC., Carney, J.N., Lawley, R.S., and Rushton, A.W.A. (1998) The Geology of the Country around Coventry and Nuneaton. Memoir of the British Geological Survey, Sheet 169 (England and Wales), The Stationery Office, London.
British Geological Survey (1973) St David's. 1:25 000 special sheet.
British Geological Survey (1982) 1:50 000 Series, England and Wales. Sheet 135, Harlech.
British Geological Survey (1985) Classical Areas of British Geology: Passes of Nant Ffrancon and Llanberis. 1:25 000 scale map.
British Geological Survey (1988a) Classical Areas of British Geology: Llyn Padarn. 1:25 000 scale map.
British Geological Survey (1988b) 1:50 000 Series, Scotland. Sheet 7, Girvan.
British Geological Survey (1991) Classical Areas of British Geology: The Shelve Ordovician Inlier and Adjacent Areas. 1:25 000 scale map.
British Geological Survey (1993) 1:50 000 Series, England and Wales. Sheet 179, Rhayader.
British Geological Survey (1994a) 1:50 000 Series, England and Wales. Sheet 169, Coventry.
British Geological Survey (1994b) 1:50 000 Series, England and Wales. Sheet 165, Montgomery.
British Geological Survey (1994c) The Rocks of Wales. Geological map of Wales, 1:250 000 scale.
British Geological Survey (1995) 1:50 000 Series, England and Wales. Sheet 149, Cadair Idris.
Brongniart, A. (1822) In Histoire naturelle des Crustacés Fossiles, sous les Rapports Zoologique et Géologique (eds. A. Brongniart and A.G. Desmarest). Savoir: les Trilobites par A. Brongniart. Les Crustacés proprement dits par A.G. Desmarest. Paris, 154 pp.
Bruton, D.L., Erdtmann, B.-D. and Koch, L. (1982) The Naersnes section, Oslo Region, Norway: a candidate for the Cambrian–Ordovician boundary stratotype at the base of the Tremadoc Series. In The Cambrian–Ordovician Boundary: Sections, Fossil Distributions and Correlations (eds M.G. Bassett and W.T. Dean), National Museum of Wales, Geological Series No. 3, Cardiff, pp. 61–9.
Buckland, W. (1817) Description of an insulated group of rocks of slate and greenstone in Cumberland and Westmoreland, on the east side of Appleby, between Melmerby and Murton. Transactions of the Geological Society of London, 4, 105–16.
Bulman, O.M.B. (1927–1967) A Monograph of the British Dendroid Graptolites, Parts 1–4. Monograph of the Palaeontographical Society, London, 97 pp.
Bulman, O.M.B. (1944–1947) A Monograph of the Caradoc (Balclatchie) Graptolites from Limestones in Laggan Burn, Ayrshire, Parts 1–3. Monograph of the Palaeontographical Society, London, 78 pp.
Bulman, O.M.B. (1954) The graptolite fauna of the Dictyonema Shales of the Oslo Region. Norsk Geologisk Tidsskrift, 33, 1–40.
Bulman, O.M.B. (1963) On Glyptograptus dentatus (Brongniart) and some allied species. Palaeontology, 6, 665–89.
Bulman, O.M.B. (1971) Some species of Bryograptus and Pseudobryograptus from Northwest Europe. Geological Magazine, 108, 361–71.
Bulman, O.M.B. and Rushton, A.W.A. (1973) Tremadoc faunas from boreholes in central England. Bulletin of the Geological Survey of Great Britain, 43, 1–40.
Burgess, I.C. and Holliday, D.W. (1979) Geology of the Country around Brough-under-Stainmore. Memoir of the British Geological Survey, Sheet 31 and parts of Sheets 25 and 30 (England and Wales), HMSO, London.
Burgess, I.C. and Wadge, A.J. (1974) Classical Areas of British Geology: Geology of the Cross Fell Area. HMSO, London, for the British Geological Survey.
Buttler, C.J. (1991) A new upper Ordovician bryozoan fauna from the Slade and Redhill Beds, South Wales. Palaeontology, 34, 77–108.
Callaway, C. (1877) On a new area of Upper Cambrian rocks in south Shropshire, with a description of a new fauna. Quarterly Journal of the Geological Society, London, 33, 652–72.
Callaway, C. (1878) On the fauna and age of the Shineton Shales. Geological Magazine, Decade 2, 5 (2), 332–3.
Callaway, C. (1883) The age of the newer gneissic rocks of the Northern Highlands. With notes on the lithology, by Prof. T.G. Bonney. Quarterly Journal of the Geological Society, London, 39, 355–422.
Cameron, I.B., Stone, P. and Smellie, J. (1986) Geology of the Country around Girvan. Explanation for 1:50 000 geological sheet 7 (Scotland), British Geological Survey, HMSO, London.
Cantrill, T.C. and Thomas, H.H. (1906) On the igneous and associated sedimentary rocks of Llangynog, Caermarthenshire. Quarterly Journal of the Geological Society, London, 62, 223–52.
Carney, J.N. (1992a) The geology of the Lower Cambrian Hartshill Sandstone Formation and Precambrian basement of the Caldecote Volcanic Formation, as exposed in quarries north-west of Nuneaton. British Geological Survey, Technical Report WA/92/80.
Carney, J.N. (1992b) Geology and structure of the Lower Cambrian Hartshill Sandstone Formation: information from quarries northwest of Nuneaton, SP 39 NW British Geological Survey, Technical Report WA/92/08.
Carney, J.N. and Pharaoh, T.C. (1993) Geology, chemistry and structure of Precambrian rocks in quarries north-west of Nuneaton SP 39 SW. British Geological Survey, Technical Report WA/93/94.
Carney, J.N., Horak, J.M., Pharaoh, T.C., Gibbons, W, Wilson, D. et al., (in press) Precambrian Rocks of England and Wales, GCR Series, No. 19, JNCC, Peterborough.
Carter, R.M. (1971) Revision of Arenig Bivalvia from Ramsey Island, Pembrokeshire. Palaeontology, 14, 250–61.
Cattermole, P.J. and Jones, A. (1970) The geology of the area around Mynydd Mawr, Nantlle, Caernarvonshire. Geological Journal, 7, 111–28.
Cattermole, P.J. and Romano, M. (1981) Lleyn Peninsula. Geologists' Association Guide, 39, 39 pp.
Cave, R. (1957) Salterolithus caractaci (Murchison) from the Caradoc strata near Welshpool, Montgomeryshire. Geological Magazine, 94, 281–90.
Cave, R. (1960) A new species of Tretaspis from south Wales. Geological Magazine, 97, 334–7.
Cave, R. (1965) The Nod Glas sediments of Caradoc age in North Wales. Geological Journal, 4, 279–98.
Cave, R. (1977) Geology of the Malmsbury District. Memoir of the Geological Survey of Great Britain (England and Wales), Sheet 251, HMSO, London, 341pp.
Cave, R. and Dixon, R.J. (1993) The Ordovician and Silurian of the Welshpool area. In Geological Excursions in Powys, Central Wales (eds N. Woodcock and M.G. Bassett), University of Wales Press and National Museum of Wales, pp. 51–84.
Cave, R. and Hains, B.A. (in press) The Geology of the Country around Montgomery, with an Account of the Ordovician Area of Shelve. Memoir of the British Geological Survey, Sheet 165 (England and Wales), The Stationery Office, London.
Cave, R. and Price, D. (1978) The Ashgill Series near Welshpool, North Wales. Geological Magazine, 115, 183–94.
Cave, R. and Rushton, A.W.A. (1996) The Llandeilo (Ordovician) Series in the core of the Tywi Anticline, Llanwrtyd, Powys, UK. Geological Journal, 31, 47–60.
Church, W.R. and Gayer, R.A. (1973) The Ballantrae ophiolite. Geological Magazine, 110, 497–510.
Clarkson, E.N.K. (1993) Invertebrate Palaeontology and Evolution, 3rd edn, Chapman and Hall, London, 434 pp.
Clarkson, E.N.K. (1998) Invertebrate Palaeontology and Evolution, 4th edn, Blackwell Science, Oxford, 468pp.
Clarkson, E.N.K. and Taylor, C.M. (1993) Dob's Linn, Moffat. In Scottish Borders Geology. An Excursion Guide (eds A.D. McAdam, E.N.K. Clarkson and P. Stone), Edinburgh Geological Society; Scottish Academic Press, pp. 159–72.
Cleevely, R.J., Tripp, R.P. and Howells, Y. (1989) Mrs Robert Gray (1831–1924): a passion for fossils. Bulletin of the British Museum of Natural History (Historical Series), 17, 167–258.
Cobbold, E.S. (1901) Geology. In Church Stretton (ed. C.W. Campbell-Hyslop), L. Wilding, Shrewsbury, 115 pp.
Cobbold, E.S. (1910) On some small trilobites from the Cambrian rocks of Comley (Shropshire). Quarterly Journal of the Geological Society, London, 66, 19–51.
Cobbold, E.S. (1911) Trilobites from the Paradoxides beds of Comley (Shropshire). Quarterly Journal of the Geological Society, London, 67, 282–311.
Cobbold, E.S. (1919) Cambrian Hyolithidae, etc., from Hartshill in the Nuneaton district, Warwickshire. Geological Magazine, Decade 6, 6, 149–58.
Cobbold, E.S. (1921) The Cambrian horizons of Comley (Shropshire), and their Brachiopoda, Pteropoda, Gasteropoda, etc. Quarterly Journal of the Geological Society, London, 76, 325–86.
Cobbold, E.S. (1927) The stratigraphy and geological structure of the Cambrian area of Comley (Shropshire). Quarterly Journal of the Geological Society, London, 83, 551–73.
Cobbold, E.S. (1931) Additional fossils from the Cambrian rocks of Comley, Shropshire. Quarterly Journal of the Geological Society, London, 87, 459–512.
Cobbold, E.S. (1933) Notes on Comley Quarry, near Church Stretton, Shropshire. British Association Reports. Section C — Geology, 1933, 473–6.
Cobbold, E.S. (1936) The Conchostraca of the Cambrian area of Comley, Shropshire, with a note on a new variety of Atops reticulatus (Walcott). Quarterly Journal of the Geological Society, London, 92, 221–35.
Cobbold, E.S. and Pocock, R.W. (1934) The Cambrian area of Rushton (Shropshire). Philosophical Transactions of the Royal Society of London, Series B, 223, 305–409.
Cocks, L.R.M. (1978) A Review of British Lower Palaeozoic Brachiopods, including a Synoptic Revision of Davidson's Monograph. Monograph of the Palaeontographical Society, London, 256 pp.
Cocks, L.R.M. (1988) The Ordovician–Silurian boundary and its working group. Bulletin of the British Museum of Natural History (Geology), 43, 9–15.
Cocks L.R.M. and Fortey, R.A. (1982) Faunal evidence for oceanic separations in the Palaeozoic of Britain. Journal of the Geological Society, London, 139, 371–414.
Cocks, L.R.M. and Price, D. (1975) The biostratigraphy of the upper Ordovician and lower Silurian of south-west Dyfed, with comments on the Hirriantia fauna. Palaeontology, 18, 703–24. '
Cocks, L.R.M. and Rickards, R.B. (1988) Introduction [to 'A global analysis of the Ordovician–Silurian boundary']. Bulletin of the British Museum of Natural History (Geology), 43, 5–7.
Cocks, L.R.M., McKerrow, W.S. and van Staal, C.R. (1997) The margins of Avalonia. Geological Magazine, 134, 456–60.
Compston, W and Williams, I.S. (1992) Ion-probe ages for the British Ordovician and Silurian stratotypes. In Global Perspectives on Ordovician Geology (eds B.D. Webby and J.R. Laurie), Balkema, Rotterdam, 59–67.
Conway Morris, S. (1992) Burgess-Shale type faunas in the context of the 'Cambrian explosion': a review. Journal of the Geological Society, London, 149, 631–6.
Conway Morris, S. (1997) The cuticular structure of the 495-Myr-old type species of the fossil worm Palaeoscolex, P piscatorum (?Priapulida). Zoological Journal of the Linnaean Society, 119, 69–82.
Conway Morris, S. and Rushton, A.W.A. (1988) Precambrian to Tremadoc biotas in the Caledonides. In The Caledonian–Appalachian Orogen (eds A.L. Harris and D.J. Fettes), Geological Society of London, Special Publication No. 38, pp. 93–109.
Conway Morris, S., Mcllroy, D. and Rushton, A.W.A. (1998) Lower Cambrian Halkieriids from Oxfordshire, UK. Geological Magazine, 135, 501–8.
Cook, A.F. (1977) Temporary exposure of the Middle Cambrian, Warwickshire, England. Geological Magazine, 114, 33–40.
Cooper, A.H. and Molyneux, S.G. (1990) The age and correlation of the Skiddaw Group (Early Ordovician) sediments of the Cross Fell inlier (northern England). Geological Magazine, 127, 147–157.
Cooper, A.H., Rushton, Molyneux, S.G., Hughes, R.A., Moore, R.M and Webb, B.C. (1995) The stratigraphy, correlation, provenance and palaeogeography of the Skiddaw Group (Ordovician) in the English Lake District. Geological Magazine, 132, 185–211.
Cooper, A.H., Fortey, N.J., Hughes, C.P., Molyneux, S.G., Rushton, A.W.A. and Stone, P. (in press) Skiddaw Group in the English Lake District. Memoir of the British Geological Survey, The Stationery Office, London.
Cooper, R.A. (1973) Taxonomy and evolution of Isograptus Moberg in Australasia. Palaeontology, 16, 45–115.
Cooper, R.A. (1979) Sequence and correlation of Tremadoc graptolite assemblages. Alcheringa, 3, 7–19.
Cooper, R.A. and Lindholm, K. (1990) A precise worldwide correlation of early Ordovician graptolite sequences. Geological Magazine, 127, 497–525.
Cooper, R.A., Fortey, R.A. and Lindholm, K. (1991) Latitudinal and depth zonation of early Ordovician graptolites. Lethaia, 24, 199–218.
Cope, J.C.W. (1982) The geology of the Llanstephan peninsula. In Geological Excursions in Dyfed, South-west Wales (ed. M.G. Bassett), National Museum of Wales, Cardiff, pp. 259–269.
Cope, J.C.W. (1996) Early Ordovician (Arenig) bivalves from the Llangynog inlier, South Wales. Palaeontology, 39, 979–1025.
Cope, J.C.W. and Gibbons, W. (1987) New evidence for the relative age of the Ercall Granophyre and its bearing on the Precambrian–Cambrian boundary in southern Britain. Geological Journal, 22, 53–60.
Cope, J.C.W. and Mcllroy, D. (1998) On the occurrence of foraminiferans in the lower Cambrian of the Llangynog Inlier, south Wales. Geological Magazine, 135, 227–9.
Cope, J.C.W. and Rushton, A.W.A. (1992) Cambrian and early Tremadoc rocks of the Llangynog Inlier, Dyfed, South Wales. Geological Magazine, 129, 543–52.
Cope, J.C.W., Fortey, R.A. and Owens, R.M. (1978) Newly discovered Tremadoc rocks in the Carmarthen district, South Wales. Geological Magazine, 115, 195–8.
Cope, J.C.W., Ingham, J.K. and Rawson, R.E (eds) (1992) Atlas of Palaeogeography and Lithofacies . Memoir of the Geological Society, London, No. 13.
Cowie, J.W. (1974) The Cambrian of Spitsbergen and Scotland. In The Cambrian of the British Isles, Norden, and Spitsbergen (ed. C.H. Holland), John Wiley, London, pp. 123–55.
Cowie, J.W. and McNamara, K.J. (1978) Olenellus (Trilobita) from the Lower Cambrian strata of north-west Scotland. Palaeontology, 21, 615–34.
Cowie, J.W., Rushton, A.W.A. and Stubblefield, C.J. (1972) A Correlation of Cambrian Rocks in the British Isles. Geological Society, London, Special Report No. 2.
Cox, A.H. (1915) The geology of the district between Abereiddy and Abercastle (Pembrokeshire). Quarterly Journal of the Geological Society, London, 71, 273–342.
Cox, A.H. (1930) Preliminary note on the geological structure of Pen Caer and Strumble Head, Pembrokeshire. Proceedings of the Geologists' Association, 41, 274–89.
Cox, A.H. and Wells, A.K. (1921) The Lower Palaeozoic rocks of the Arthog–Dolgelly district (Merionethshire). Quarterly Journal of the Geological Society, London, 81, 539–94.
Cox, A.H., Green, J.F.N., Jones, O.T. and Pringle, J. (1930a) The geology of the St David's district, Pembrokeshire. Proceedings of the Geologists' Association, 41, 241–73.
Cox, A.H., Green, J.F.N., Jones, O.T. and Pringle, J. (1930b) The St David's district. Report of the summer meeting, 1930. Proceedings of the Geologists' Association, 41, 412–38.
Crimes, T.P. (1966) The relative age of some concretions in Cambrian sediments of St Tudwal's Peninsula, North Wales. Geological Journal, 5, 33–42.
Crimes, T.P. (1968) Cruziana: a stratigraphically useful trace fossil. Geological Magazine, 105, 360–4.
Crimes, T.P. (1969) Trace fossils from the Cambro-Ordovician rocks of North Wales and their stratigraphic significance. Geological Journal, 6, 333–8.
Crimes, T.P. (1970a) A facies analysis of the Cambrian of Wales. Palaeogeography, Palaeoclimatology, Palaeoecology, 7, 113–70.
Crimes, T.P. (1970b) Trilobite tracks and other trace fossils from the Upper Cambrian of North Wales. Geological Journal, 7, 47–68.
Crimes, T.P. (1970c) The significance of trace fossils in sedimentology, stratigraphy and palaeoecology with examples from Lower Palaeozoic strata. Geological Journal (Special Issue on Trace Fossils), No. 3, 101–26.
Crimes, T.P. (1970d) A facies analysis of the Arenig of Western Lleyn, North Wales. Proceedings of the Geologists' Association, 81, 221–39.
Crosfield, M.C. and Skeat, E.G. (1896) On the geology of the neighbourhood of Carmarthen. Quarterly Journal of the Geological Society, London, 52, 523–41.
Cullen, B. (1986) Sedimentological and palaeontological changes across the Ordovician–Silurian boundary in North Wales. Unpublished PhD thesis, University of Liverpool.
Cunningham, R.J.H. (1841) Geognostic account of the County of Sutherland. Transactions of the Highland and Agricultural Society of Scotland, New Series 7, 73–114.
Curry, G.B. (1986) Tailor-made geology 3: Lime Craig Quarry, Aberfoyle, Scotland. Geology Today, Jan–Feb 1986, 25–7.
Curry, G.B., Ingham, J.K., Bluck, B.J. and Williams, A. (1982) The significance of a reliable Ordovician age for some Highland Border rocks in Central Scotland. Journal of the Geological Society, London, 139, 451–4.
Curry, G.B., Bluck, B.J., Burton, C.J.,. Ingham, J.K., Siveter, D.J. and Williams, A. (1984) Age, evolution and tectonic history of the Highland Border Complex, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 75, 113–33.
Dakyns, J.R., Tiddeman, R.H., Russell, R., Clough, C.T. and Strahan, A. (1891) The Geology of the Country around Mallerstang with parts of Wensleydale, Swaledale and Arkendale, Memoirs of the Geological Survey of the United Kingdom, HMSO, London.
Daley, P.E.J. (1992a) Two new cornutes from the lower Ordovician of Shropshire and Southern France. Palaeontology, 35, 127–48.
Daley, P.E.J. (1992b) The anatomy of the solute Girvanicystis batheri (?Chordata) from the Upper Ordovician of Scotland and a new species of Girvanicystis from the Upper Ordovician of South Wales. Zoological Journal of the Linnean Society, 105, 353–75.
Davidek, K., Landing, E., Bowring, S.A., Westrop, S.R., Rushton, A.W.A., Fortey, R.A. and Adrain, J. (1998) New uppermost Cambrian U-Pb date from Avalonian Wales and the age of the Cambrian–Ordovician boundary. Geological Magazine, 135, 303–9.
Davies, J.R., Fletcher, C.J.N., Waters, R.A., Wilson, D., Woodhall, D.G. and Zalasiewicz, J.A. (1997) Geology of the Country around Llanilar and Rhayader. Memoir of the British Geological Survey, Sheets 178 and 179 (England and Wales), The Stationary Office, London.
Davies, K.A. (1929) Notes on the graptolites of the Upper Ordovician and Lower Silurian. Geological Magazine, 66, 1–27.
De la Beche, H.T. (1846) On the formation of the rocks of South Wales and South Western England. Memoirs of the Geological Survey of Great Britain, 1, 1–296.
Dean, W.T. (1958) The faunal succession in the Caradoc Series of south Shropshire. Bulletin of the British Museum of Natural History (Geology), 3, 191–231.
Dean, W.T. (1959a) The stratigraphy of the Caradoc Series in the Cross Fell inlier. Proceedings of the Yorkshire Geological Society, 32, 185–228.
Dean, W.T. (1959b) Duftonia, a new trilobite genus from the Ordovician of England and Wales. Palaeontology, 2, 143–9.
Dean, W.T. (1960) The Ordovician trilobite faunas of south Shropshire, I. Bulletin of the British Museum of Natural History (Geology), 4 (7), 1–43.
Dean, W.T. (1961a) Trinucleid trilobites from the Higher Dufton Shales of the Caradoc Series of the Cross Fell Inlier. Proceedings of the Yorkshire Geological Society, 33, 119–34.
Dean, W.T. (1961b) The Ordovician trilobite faunas of South Shropshire, II. Bulletin of the British Museum of Natural History (Geology), 5, 311–58.
Dean, W.T. (1962) The trilobites of the Caradoc Series in the Cross Fell Inlier of Northern England. Bulletin of the British Museum of Natural History (Geology), 7, 67–134.
Dean, W.T. (1963a) The Ordovician trilobite faunas of South Shropshire, III. Bulletin of the British Museum of Natural History (Geology), 7, 213–54.
Dean, W.T. (1963b) The Ordovician trilobite faunas of South Shropshire, IV. Bulletin of the British Museum of Natural History (Geology), 9, 1–18.
Dean, W.T. (1963c) The Stile End Beds and Drygill Shales (Ordovician) in the east and north of the English Lake District. Bulletin of the British Museum of Natural History (Geology), 9, 47–65.
Dean, W.T. (1964) The geology of the Ordovician and adjacent strata in the southern Caradoc district of Shropshire. Bulletin of the British Museum of Natural History (Geology), 9, 257–96.
Dean, W.T. (1971–1978) The Trilobites of the Chair of Kildare Limestone (Upper Ordovician) of Eastern Ireland, Parts 1–3. Monograph of the Palaeontographical Society, London, 129 pp.
Dean, W.T. and Dineley, D.L. (1961) The Ordovician and associated Pre-Cambrian rocks of the Pontesford district, Shropshire. Geological Magazine, 98, 367–76.
Dempster, T.J. and Bluck, B.J. (1991) The age and tectonic significance of the Bute amphibolite, Highland Border Complex, Scotland. Geological Magazine, 128, 77–80.
Dixon, E.E.L. (1925) In Summary of Progress, Geological Survey of Great Britain, for 1924, 70–1.
Donovan, S.K. (1986–1995) Pelmatozoan Columnals from the Ordovician of the British Isles, parts 1–3. Monograph of the Palaeontographical Society, HMSO, London, 193 pp.
Donovan, S.K. and Paul, C.R.C. (1985) Coronate echinoderms from the Lower Palaeozoic of Britain. Palaeontology, 28, 527–43.
Donovan, S.K. and Wright, A.D. (1995) Pelmatozoan (crinoid?) columnals from the Hirnantian (Ordovician, Ashgill) of Keisley, Cumbria, UK. Proceedings of the Yorkshire Geological Society, 50, 229–38.
Donovan, S.K., Paul, C.R.C. and Lewis, D.N. (1996) Echinoderms. In Fossils of the Upper Ordovician (eds D.A.T. Harper and A.W. Owen), Palaeontological Association, London, pp. 202–67.
Droser, M.L. (1991) Ichnofabric of the Paleozoic Skolithos ichnofacies and the nature and distribution of Skolithos piperock. Palaios, 6, 316–25.
Droser, M.L., Fortey, R.A. and Xing Li. (1996) The Ordovician Radiation. American Scientist, 84, 122–31.
Earp, J.R. (1977) 1:25 000 Geological Map of the Llandrindod Wells Ordovician inlier parts of Sheets S005, S006, S015 and S016. Institute of Geological Sciences.
Eastwood, T., Gibson, W, Cantrill, T.C. and Whitehead, T.H. (1923). The Geology of the Country around Coventry. Memoir of the Geological Survey of Great Britain, Sheet 169 (England and Wales), HMSO, London.
Eastwood, T., Hollingworth, S.E., Rose, W.C.C. and Trotter, F.M. (1968) The Geology of the Country around Cockermouth and Caldbeck. Memoir of the Geological Survey of Great Britain, Sheet 23 (England and Wales), HMSO, London.
Elders, C.F. (1987) The provenance of granite boulders in conglomerates of the Northern and Central Belts of the Southern Uplands of Scotland. Journal of the Geological Society, London, 144, 853–63.
Elders, C.F., Stone, P and Floyd, J.D. (1990) Discussion on detrital mineral ages from the Southern Uplands using 4oAr–39Ar laser probe. Journal of the Geological Society, London, 147, 882–4.
Elles, G.L. (1898) The graptolite-fauna of the Skiddaw Slates. Quarterly Journal of the Geological Society, London, 54, 463–540.
Elles, G.L. (1904) Some graptolite zones in the Arenig rocks of Wales. Geological Magazine, decade 5, 1, 199–211.
Elles, G.L. (1909) The relation of the Ordovician and Silurian Rocks of Conway (North Wales). Quarterly Journal of the Geological Society, London. 65, 169–94.
Elles, G.L. (1922a) The Bala country: its structure and rock succession. Quarterly Journal of the Geological Society, London, 78, 132–73.
Elles, G. L. (1922b) The age of the Hirnant Beds. Geological Magazine, 59, 409–14.
Elles, G.L. (1923) The age of the Hirnant Beds. Geological Magazine, 60, 559–60.
Elles, G.L. (1933) The lower Ordovician graptolite faunas with special reference to the Skiddaw Slates. Summary of Progress of the Geological Survey of Great Britain, for 1932, part II, 94–111.
Elles, G.L. (1940) The stratigraphy and faunal succession in the Ordovician rocks of the Builth–Llandrindod inlier, Radnorshire. Quarterly Journal of the Geological Society, London, 95, 383–445.
Elles, G.L. and Wood, E.M.R. (1901–1918) A Monograph of British Graptolites. Parts 1–11. Monograph of the Palaeontographical Society, London, 539 pp.
Erdtmann, B.-D. (1982) Palaeobiogeography and environments of planktic dictyonemid graptolites during the earliest Ordovician. In The Cambrian–Ordovician Boundary: Sections, Fossil Distributions and Correlations (eds M.G. Bassett and W.T. Dean), National Museum of Wales, Geological Series No. 3, Cardiff, 9–27.
Erdtmann, B.-D. and Miller, J.F. (1981) Eustatic control of lithofacies and biofacies changes near the base of the Tremadocian. In Short Papers for the Second International Symposium on the Cambrian System (ed. M.E. Taylor), Open file report for the US Geological Survey, 81–743, 78–81.
Erdtmann, B.-D., Maletz, J. and Gutierrez-Marco, J.C. (1987) New early Ordovician (Hunneberg Stage) graptolite genus Paradelograptus (Kinnegraptidae), its phylogeny and biostratigraphy. Paleiontologische Zeitschrift, 61, 109–31.
Ethington, R.L. and Austin, R.L. (1991) Conodonts of the Dounans Limestone, Highland Border Complex, Scotland. Journal of Micropalaeontology, 10, 51–6.
Evans, A., Garrett, P and Whittaker, J.H.McD. (1966) Palaeocurrents in the Upper Cambrian of North Wales. Nature, 209, 1230.
Evans, D.C. (1906) The Ordovician rocks of western Caermarthenshire. Quarterly Journal of the Geological Society, London, 62, 597–643.
Evans, D.C. and Jones, O.T. (1926) Report of excursion to Carmarthen, Easter 1925. Proceedings of the Geologists' Association, 37, 107–15.
Evans, D.H. (1994) Siphonal and cameral deposits in Alumettoceras and the position of the Tripteroceratidae (Nautiloidea). Paldontologische Zeitschrift, 68, 321–37.
Evans, W.D. (1948) The Cambrian–Ordovician junction, Whitesand Bay, Pembrokeshire. Geological Magazine, 85, 110–2.
Fearnsides, W.G. (1905) On the geology of Arenig Fawr and Moel Llyfnant. Quarterly Journal of the Geological Society, London, 61, 608–37.
Fearnsides, W.G. (1910) The Tremadoc Slates of south-east Carnarvonshire. Quarterly Journal of the Geological Society, London, 66, 142–88.
Fearnsides, W.G. (1912) Report of an excursion to the Portmadoc and Criccieth district of south-east Carnarvonshire. Proceedings of the Geologists' Association, 23, 199–217.
Fearnsides, W.G. and Davies, W.G. (1944) The geology of Deudraeth. The country between Traeth Mawr and Traeth Bach, Merioneth. Quarterly Journal of the Geological Society, London, 99, 247–76.
Finney, S.C. and Bergström S.M. (1986) Biostratigraphy of the Ordovician Nemagraptus gracilis Zone. In Palaeoecology and Biostratigraphy of Graptolites (eds C.P. Hughes and R.B. Rickards), Geological Society of London, Special Publication, 20, pp. 47–59.
Flower, R.H. (1978) St George And Table Head cephalopod zonation in western Newfoundland: in Current Research, Part A. Geological Survey of Canada, Paper 78–1A, 217–24.
Floyd, J.D. (1994) The derivation and definition of the 'Southern Upland Fault'; a review of the Midland Valley-Southern Uplands terrine boundary. Scottish Journal of Geology, 30, 51–62.
Floyd, J.D. (1996) Lithostratigraphy of the Ordovician rocks in the Southern Uplands: Crawford Group, Moffat Shale Group, Leadhills Supergroup. Transactions of the Royal Society of Edinburgh: Earth Sciences, 86, 153–65.
Floyd, J.D. (1999) Geology of the Carrick–Loch Doon District. Memoir of the British Geological Survey, Sheets 8W and 8E (Scotland), The Stationery Office, London, 122pp.
Floyd, J.D., Williams, M. and Rushton, A.W.A. (1999) Late Ordovician (Ashgill) ostracodes from the Drummuck Group, Craighead Inlier, Girvan District, southwest Scotland. Scottish Journal of Geology, 35, 15–24.
Forbes, E. (1848) On the Cystideæ of the Silurian Rocks of the British Islands. Memoirs of the Geological Survey of Great Britain, 2 (2), 483–538.
Fortey, R.A. (1975) Early Ordovician trilobite communities. Fossils and Strata, 4, 331–52.
Fortey, R.A. (1980) Basilicus tyrannus (Murchison) and the glabellar structure of asaphid trilobites. Bulletin of the British Museum of Natural History (Geology), 34, 255–64.
Fortey, R.A. (1984) Global earlier Ordovician transgressions and regressions and their biological implications. In Aspects of the Ordovician System (ed. D.L. Bruton), Universitetsforlaget, Oslo, pp. 137–50.
Fortey, R.A. (1992) Ordovician trilobites from the Durness Group, North-West Scotland and their palaeobiogeography. Scottish Journal of Geology, 28, 115–21.
Fortey, R.A. (1993) Charles Lapworth and the biostratigraphic paradigm. Journal of the Geological Society, London, 150, 209–18.
Fortey, R.A. and Cocks, L.R.M. (1986) Marginal faunal belts and their structural implications, with examples from the Lower Palaeozoic. Journal of the Geological Society, London, 143, 151–60.
Fortey, R.A. and Cocks, L.R.M. (1988) Arenig to Llandovery faunal distribution in the Caledonides. In The Caledonian–Appalachian Orogen (eds A.L. Harris and D.J. Fettes), Geological Society of London, Special Publication, No. 38, pp. 233–246.
Fortey, R.A. and Mellish, C.J.T. (1992) Are some fossils better than others for inferring palaeogeography? Terra Nova, 4, 210–16.
Fortey, R.A. and Owens, R.M. (1978) Early Ordovician stratigraphy and faunas of the Carmarthen district, south-west Wales. Bulletin of the British Museum of Natural History (Geology), 30, 225–94.
Fortey, R.A. and Owens, R.M. (1987) The Arenig Series in south Wales. Bulletin of the British Museum of Natural History (Geology), 41, 69–307.
Fortey, R.A. and Owens, R.M. (1990a) Trilobites. In Evolutionary Trends (ed. K.J. McNamara), Belhaven Press, London, pp. 121–42.
Fortey, R.A. and Owens, R.M. (1990b) Arenig biostratigraphy and correlation in the Welsh Basin. Journal of the Geological Society, London, 147, 607–10.
Fortey, R.A. and Owens, R.M. (1991a). The early Ordovician trilobite Beltella. Proceedings of the Bristol Naturalists' Society, 49 [for 1989], 69–79.
Fortey, R.A. and Owens, R.M. (1991b) A trilobite fauna from the highest Shineton Shales in Shropshire, and the correlation of the latest Tremadoc. Geological Magazine, 128, 437–64.
Fortey, R.A. and Owens, R.M. (1992) The Habberley Formation: youngest Tremadoc in the Welsh Borderlands. Geological Magazine, 129, 553–66.
Fortey, R.A. and Rushton, A.W.A. (1980) Acanthopleurella Groom 1902: origin and life-habits of a miniature trilobite. Bulletin of the British Museum of Natural History (Geology), 33, 79–89.
Fortey, R.A., Bassett, M.G., Harper, D.A.T. et al. (1991) Progress and problems in the selection of stratotypes for the bases of Ordovician series in the type area UK. In Advances in Ordovician Geology (eds C.R. Barnes and S.H. Williams), Geological Survey of Canada, Paper 90–9, 5–25.
Fortey, R.A., Beckly, A. and Rushton, A.W.A. (1990) International correlation of the base of the Llanvirn Series, Ordovician System. Newsletters in Stratigraphy, 22, 119–42.
Fortey, R.A., Briggs, D.E.G. and Wills, M.A. (1997) The Cambrian evolutionary 'explosion' recalibrated. BioEssays, 19, 429–34.
Fortey, R.A., Harper, D.A.T., Ingham, J.K., Owen, A.W. and Rushton, A.W.A. (1995) A revision of the Ordovician series and stages from the historical type area. Geological Magazine, 132, 15–30.
Fortey, R.A., Owens, R.M. and Rushton, A.W.A. (1989) The palaeogeographic position of the Lake District in the early Ordovician. Geological Magazine, 126, 9–17.
Friedrich, W-P. (1993) Systematik and Funktionsmorphologie mittelkambrischer Cincta (Carpoidea, Echinodermata). Beringeria, 7, 3–190.
Friedrich, W-P (1995) Neuer Nachweise mittelkambrisches Cincta (Carpoidea, Echinodermata) aus Marokko, Sardinien und Süd-Wales. Beringeria, Special Issue No. 2, 255–69.
Fumes, H. (1978) A comparative study of Caledonian volcanics in Wales and west Norway. Unpublished PhD thesis, University of Oxford.
Geikie, A. (1883) On the supposed Pre-Cambrian rocks of St David's. Quarterly Journal of the Geological Society, London, 39, 261–333.
Geikie, A. (1891) Anniversary address of the President. Proceedings of the Geological Society, London, Session 1890–91, 48–162.
Geikie, A. (1897) Annual Report of the Geological Survey of the United Kingdom and of the Museum of Practical Geology, for the year ending 31 December 1896, HMSO, London, 107 pp.
Geological Survey of Scotland (1893) 1:63 360 Sheet 114 (Tongue). [1889, partly revised 1893].
George, T.N. and Pringle, J. (1948) British Regional Geology. South Wales, 2nd edn, HMSO, London, 100 pp.
Geyer, G. (1990) Revised Lower to lower Middle Cambrian biostratigraphy of Morocco. Newsletters on Stratigraphy, 22, 53–70.
Gibbons, W and McCarroll, D. (1993) Geology of the Country around Aberdaron, including Bardsey Island. Memoir of the British Geological Survey, Sheet 133 (England and Wales), HMSO, London.
Glasby, G.P. (1974) A geochemical study of the manganese ore deposits of the Harlech Dome, North Wales. Journal of Earth Sciences, 8, 445–50.
Goldring, R. and Stephenson, D.G. (1972) The depositional environment of three Starfish Beds. Neues Jahrbuch für Geologie und Paläontologie, 10, 611–24.
Green, J.F.N. (1908) The geological structure of the St David's area (Pembrokshire). Quarterly Journal of the Geological Society, London, 64, 363–83.
Green, J.F.N. (1911a) The geology of the district around St David's, Pembrokeshire. Proceedings of the Geologists' Association, 22, 121–41.
Green, J.F.N. (1911b) Excursion to the St David's district, South Wales. Proceedings of the Geologists' Association, 22, 215–34.
Greenly, E. (1919) The Geology of Anglesey. Memoirs of the Geological Survey of Great Britain, 2 vols, 980 pp.
Greig, D.C., Wright, J.E., Hains, B.A. and Mitchell, G.H. (1968) Geology of the Country around Church Stretton, Craven Arms, Wenlock Edge and Brown Clee. Memoir of the Geological Survey of Great Britain, Sheet 166 (England and Wales), HMSO, London.
Groom, T.T. (1899) The geological structure of the southern Malvern Hills, and of the adjacent district to the west. Quarterly Journal of the Geological Society, London, 55, 129–69.
Groom, T.T. (1902) The sequence of the Cambrian and associated beds of the Malvern Hills. Quarterly Journal of the Geological Society, London, 58, 89–149.
Grotzinger, J.P., Bowring, S.A., Saylor, B.Z. and Kaufman, A.J. (1995) Biostratigraphic and geochronologic constraints on early animal evolution. Science, 270, 598–604.
Hall, J., Powell, D.W., Warner, M. R., El-Isa, Z.M.H., Adesanye, O. and Bluck, B.J. (1983) Seismological evidence of shallow crystalline basement in the Southern Uplands of Scotland. Nature, 305, 418–20.
Hallam, A. and Swett, K. (1966) Trace fossils from the Lower Cambrian Pipe rock of the north west Highlands. Scottish Journal of Geology, 2, 101–6.
Hamblin, R.J.O. and Coppack, B.C. (1995) Geology of Telford and the Coalbrookdale Coalfield. Memoir of the British Geological Survey, parts of Sheets 152 and 153 (England and Wales), The Stationery Office, London.
Harkness, R. (1851) On the Silurian rocks of Dumfriesshire and Kirkcudbrightshire. Quarterly Journal of the Geological Society, London, 7, 46–58.
Harkness, R. (1861) On the rocks of portions of the Highlands of Scotland south of the Caledonian Canal; and on their equivalents in the north of Ireland. Quarterly Journal of the Geological Society, London, 17, 256–71.
Harkness, R. (1863) On the Skiddaw Slates. Quarterly Journal of the Geological Society, London, 19, 113–35.
Harkness, R. and Hicks, H. (1871) On the ancient rocks of St David's promontory, South Wales, and their fossil contents. Quarterly Journal of the Geological Society, London, 27, 384–404.
Harkness, R. and Nicholson, H.A. (1877) The strata and their fossil contents between the Borrowdale Series of the north of England and the Coniston Flags. Quarterly Journal of the Geological Society, London, 33, 461–84.
Harland, W.B. and Gayer, R.A. (1972) The Arctic Caledonides and earlier oceans. Geological Magazine, 109, 289–314.
Harland, W.B., Cox, A.N., Llewellyn, P.G., Picton, C.A.G., Smith, A.G. and Walters, R. (1982) A Geologic Time Scale, Cambridge University Press, 131 pp.
Harper, D.A.T. (1978) The occurrence of the Ordovician brachiopod Heterorthis alternata (J. de C. Sowerby) in the topmost Onnian of the type Caradoc area. Geological Magazine, 115, 301–4.
Harper, D.A.T. (1979) The environmental significance of some faunal changes in the Upper Ardmillan succession (upper Ordovician), Girvan, Scotland. In The Caledonides of the British Isles — Reviewed (eds A.L. Harris, B.E. Leake and C.H. Holland), Geological Society of London, Special Publication No. 8, 439–45.
Harper, D.A.T. (1981) The stratigraphy and faunas of the Upper Ordovician High Mains Formation of the Girvan district. Scottish Journal of Geology, 17, 247–55.
Harper, D.A.T. (1982a) The stratigraphy of the Drummuck Group (Ashgill), Girvan. Geological Journal, 17, 251–77.
Harper, D.A.T. (1982b) The late Ordovician Lady Burn Starfish Beds of Girvan. Proceedings of the Geological Society of Glasgow, 122/123, 28–32.
Harper, D.A.T. (1984–1989) Brachiopods from the Upper Ardmillan Succession (Ordovician), of the Girvan District, Scotland, Parts 1 and 2. Monograph of the Palaeontographical Society London, 128 pp.
Harper, D.A.T. and Owen, A.W. (1986) A shelly biofacies from the graptolitic mudstones of the lower Balclatchie Group (lower Caradoc) near Laggan, Girvan district. Scottish Journal of Geology, 22, 271–83.
Harper, D.A.T. and Owen, A.W. (eds) (1996) Fossils of the Upper Ordovician, Palaeontological Association, London.
Harper, D.A.T. and Rong, Jia-yu (1995) Patterns of change in the brachiopod faunas through the Ordovician–Silurian interface. Modern Geology, 20, 83–100.
Harper, D.A.T., MacNiocaill, C. and Williams, S.H. (1996) The palaeogeography of early Ordovician Iapetus terranes: an integration of faunal and palaeomagnetic constraints. Palaeogeography, Palaeoclimatology, Palaeoecology, 121, 297–312.
Harrington, H.J. and Leanza, H.F. (1957) Ordovician Trilobites of Argentina, Department of Geology, University of Kansas, Special Publication, 1, 1–276.
Harris, A.L. (1969) The relationships of the Leny Limestone to the Dalradian. Scottish Journal of Geology, 5, 187–90.
Havlidek, V. (1977) Brachiopods of the Order Orthida in Czechoslovakia. Rozpravy elsttedniho elstavu Geologickeho, 44, 1–327.
Henderson, S.M.K. (1935) Ordovician submarine disturbances in the Girvan district. Transactions of the Royal Society of Edinburgh, 63, 407–509.
Henderson, W.G. and Robertson, A.H.F. (1982) The Highland Border rocks and their relation to marginal basin development in the Scottish Caledonides. journal of the Geological Society, London, 139, 433–50.
Henningsmoen, G. (1957) The trilobite family Olcnidac. Skrifter utgitt av Det Norske Videnskaps-Akademi i Oslo. I. Matematisk-Naturvidenskapelig klasse for 1957, 1, 1–303.
Henningsmoen, G. (1973) The Cambro-Ordovician boundary. Lethaia, 6, 423–39.
Hepworth, B.C., Oliver, G.J.H. and McMurtry, M.J. (1982) Sedimentology, volcanism, structure and metamorphism of the northern margin of a Lower Palaeozoic accretionary complex: Bail Hill-Abington area of the Southern Uplands of Scotland. In Trench–forearc Geology: Sedimentation and Tectonics on Modern and Ancient Active Plate Margins (ed. J.K. Leggett), Geological Society of London, Special Publication No. 10, pp. 521–34.
Hicks, H. (1873) On the Tremadoc rocks in the neighbourhood of St David's, south Wales, and their fossil contents. Quarterly Journal of the Geological Society, London, 29, 39–52.
Hicks, H. (1875a) On the succession of ancient rocks in the vicinity of St David's, Pembrokeshire, with special reference to those of the Arenig and Llandeilo groups, and their fossil contents. Quarterly Journal of the Geological Society, London, 31, 167–95.
Hicks, H. (1875b) On the occurrence of phosphates in the Cambrian rocks. Quarterly Journal of the Geological Society, London, 31, 368–85.
Hicks, H. (1877) On the Pre-Cambrian (Dimetian and Pebidian) rocks of St Davids. Journal of the Geological Society, London, 33, 229–41.
Hicks, H. (1878) On some pre-Cambrian (Dimetian and Pebidian) rocks of Caernarvonshire. Quarterly Journal of the Geological Society, London, 34, 147–52.
Hicks, H. (1881a) On some recent researches among pre-Cambrian rocks in the British Isles. Proceedings of the Geologists' Association, 7, 59–87.
Hicks, H. (1881b) The classification of the Eozoic and Lower Palaeozoic rocks of the British Isles. Popular Science Review, new series, 5, 289–308.
Hicks, H. (1884) On the Pre-Cambrian rocks of Pembrokeshire, with especial reference to the St David's District. Quarterly Journal of the Geological Society, London, 40, 507–60.
Hicks, H. (1891) La géologie du nord du pays de Galles. Congrès Géologique International. Compte rendu de la 4me session, Londres, 1888, 267–301.
Hicks, H. and Salter, J.W. (1866) Report on Further Researches in the Lingula-Flags of South Wales. Report of the 35th meeting of the British Association for the Advancement of Science (Birmingham, 1865), 281–6.
Higgins, A.C. (1967) The age of the Durine Member of the Durness Limestone Formation at Durness. Scottish Journal of Geology, 3, 382–8.
Higgins, A.C. and Austin, R.L. (eds) (1985) A Stratigraphical Index of Conodonts, Ellis Horwood, Chichester, for the British Micropalaeontological Society.
Hiller, N. (1980) Ashgill Brachiopoda from the Glyn Ceriog District, north Wales. Bulletin of the British Museum of Natural History (Geology), 34 (3), 109–216.
Hiller, N. (1981) The Ashgill rocks of the Glyn Ceiriog district, North Wales. Geological Journal, 16, 181–200.
Hofmann, H.J. (1975) Bolopora not a bryozoan, but an Ordovician phosphatic, oncolitic accretion. Geological Magazine, 112, 523–6.
Holland, C.H. (1974) The Lower Palaeozoic Systems: an introduction. In The Cambrian of the British Isles, Norden, and Spitsbergen (ed. C.H. Holland), John Wiley, London, pp. 1–13.
Hopkinson, J. and Lapworth, C. (1875) Descriptions of the graptolites of the Arenig and Llandeilo rocks of St David's. Quarterly Journal of the Geological Society, London, 31, 631–72.
Howell, B.F. (1925) The faunas of the Cambrian Paradoxides Beds at Manuels, Newfoundland. Bulletins of American Paleontology, 11 (43), 140 pp.
Howells, M.F. and Smith, M. (1997) The Geology of the Country around Snowdon. Memoir of the British Geological Survey, Sheet 119 (England and Wales), The Stationery Office, London.
Howells, M.F., Leveridge, B.E., Evans, C.D.R. and Nutt, M.J.C. (1981) Dolgarrog. Description of 1:25 000 Geological Sheet SH76. Classical Areas of British Geology, HMSO, London.
Howells, M.F., Reedman, A.J. and Leveridge, B.E. (1985) Geology of the Country around Bangor. Explanation of 1:50 000 Sheet, British Geological Survey, Sheet 106, England and Wales, HMSO, London.
Hubert, J.F. (1966) Sedimentary history of upper Ordovician geosynclinal rocks, Girvan, Scotland. Journal of Sedimentary Petrology, 36, 677–99.
Hughes, C.P. (1969) The Ordovician trilobite faunas of the Builth–Llandrindod inlier, central Wales, part I. Bulletin of the British Museum of Natural History (Geology), 18, 41–103.
Hughes, C.P. (1971) The Ordovician trilobite faunas of the Builth–Llandrindod inlier, central Wales, part II. Bulletin of the British Museum of Natural History (Geology), 20, 117–82.
Hughes, C.P. (1979) The Ordovician trilobite faunas of the Builth–Llandrindod inlier, central Wales, part III. Bulletin of the British Museum of Natural History (Geology), 32, 109–81.
Hughes, C.P., Ingham, J.K. arid Addison, R. (1975) The morphology, classification and evolution of the Trinucleidae (Trilobita). Philosophical Transactions of the Royal Society, B, 272, 537–607.
Hughes, C.P., Rickards, R.B. and Jenkins, C.J. (1982) Abereiddi Bay and the adjacent coast. In Geological Excursions in Dyfed, Southwest Wales (ed. M.G. Bassett), National Museum of Wales, Cardiff, pp. 51–63.
Hughes, E.W. (1917) On the geology of the district from Cil-y-Coed to the St Anne's-Llanllyfni Ridge (Caernarvonshire). Geological Magazine, Decade 6, 4, 12–25, 75–80.
Hughes, N.C. and Rushton, A.W.A. (1990) Computer-aided restoration of a late Cambrian ceratopygid trilobite from Wales, and its phylogenetic implications. Palaeontology, 33, 429–45.
Hughes, R.A. (1989) Llandeilo and Caradoc Graptolites of the Builth and Shelve Inners. Monograph of the Palaeontographical Society London, 89 pp.
Hughes, T.McK. (1905) Ingleborough. Part II, Stratigraphy — continued. Proceedings of the Yorkshire Geological Society, 15, 351–71.
Humphreys, A.P. (undated [195-]). The Fauna of the Malvern Quartzite, Herefordshire, privately printed, 4 pp.
Hurst, J.M. (1979a) Evolution, succession and replacement in the type upper Caradoc (Ordovician) benthic faunas of England. Palaeogeography, Palaeoclimatology, Palaeoecology, 27, 189–246.
Hurst, J.M. (1979b) The stratigraphy and brachiopods of the upper part of the type Caradoc of south Salop. Bulletin of the British Museum of Natural History (Geology), 32, 183–304.
Hurst, J.M. (1979c) The environment of deposition of the Caradoc Alternata Limestone and contiguous deposits of Salop. Geological Journal, 14, 15–40.
Huselbee, M.Y. (1997) Late Cambrian to earliest Ordovician conodont evolution and biogeography of Greenland and northwest Scotland. Unpublished PhD thesis, University of Birmingham.
Huselbee, M.Y. and Thomas, A.T. (1998) Olenellus and conodonts from the Durness Group, NW Scotland, and the correlation of the Durness succession. Scottish Journal of Geology, 34, 83–88.
Hutchinson, R.D. (1962) Cambrian stratigraphy and trilobite faunas of southeastern Newfoundland. Bulletin of the Geological Survey of Canada, 88.
Hutchison, R. and Ingham, J.K. (1967) New trilobites from the Tremadoc Series of Shropshire. Palaeontology, 10, 47–59.
Hutt, J.E. (1974) The Llandovery Graptolites of the English Lake District, Part 1. Monograph of the Palaeontographical Society London, 1–56.
Ikin, N.P. and Harmon, R.S. (1984) Tectonic history of the ophiolitic rocks of the Highland Border fracture zone, Scotland: stable isotope evidence from fluid-rock interactions during obduction. Tectonophysics, 106, 31–48.
Illing, V.C. (1913) Recent discoveries in the Stockingford Shales near Nuneaton. Geological Magazine, decade 5, 10, 452–3.
Illing, V.C. (1916) The paradoxidian fauna of a part of the Stockingford Shales. Quarterly Journal of the Geological Society, London, 71 [for 1915], 386–450.
Ince, D. (1984) Sedimentation and tectonism in the Middle Ordovician of the Girvan district, SW Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 75, 225–37.
Ingham, J.K. (1966) The Ordovician rocks in the Cautley and Dent districts of Westmorland and Yorkshire. Proceedings of the Yorkshire Geological Society, 35, 455–505.
Ingham, J.K. (1970–1977) A Monograph of the Upper Ordovician Trilobites from the Cautley and Dent Districts of Westmorland and Yorkshire. Parts 1–3. Monograph of the Palaeontographical Society London, 1–121.
Ingham, J.K. (1978) Geology of a continental margin 2: middle and late Ordovician transgression. In Crustal Evolution in Northwestern Britain and Adjacent Regions (eds D.R. Bowes and B.E. Leake), Geological Journal, Special Issue 10, 163–76.
Ingham, J.K. (1979) The Moffat District. In Guidebook to Field Meeting, Great Britain, March 30-April 11, 1979. Subcommission on Silurian stratigraphy, Ordovician–Silurian boundary Working Group, IUGS, pp. 42–6.
Ingham, J.K. (1992a) Upper Stinchar Valley and adjacent areas. In Geological Excursions around Glasgow and Girvan (eds J.D. Lawson and D.S. Weedon), Geological Society of Glasgow, pp. 378–95.
Ingham, J.K. (1992b) Girvan foreshore. In Geological Excursions around Glasgow and Girvan (eds J.D. Lawson and D.S. Weedon), Geological Society of Glasgow, pp. 396–416.
Ingham, J.K. (1992c) The Craighead Inlier. In Geological Excursions around Glasgow and Girvan (eds J.D. Lawson and D.S. Weedon), Geological Society of Glasgow, pp. 417–35.
Ingham, J.K. and McNamara, K.J. (1978) The Coniston Limestone Group. In The Geology of the Lake District (ed. F. Moseley), Yorkshire Geological Society Occasional Publication, 3, pp. 121–9.
Ingham, J.K. and Rickards, R.B. (1974) Lower Palaeozoic rocks. In The Geology and Mineral Resources of Yorkshire (eds D.H. Rayner and J.E. Hemingway), Yorkshire Geological Society, pp. 29–44.
Ingham, J.K. and Tripp, R.P. (1991) The trilobite fauna of the Middle Ordovician Doularg Formation of the Girvan district, Scotland, and its palaeoenvironmental significance. Transactions of the Royal Society of Edinburgh: Earth Sciences, 82, 27–54.
Ingham, J.K. and Wright, A.D. (1970) A revised classification of the Ashgill Series. Lethaia, 3, 233–42.
Ingham, J.K., Curry, G.B. and Williams, A. (1986) Early Ordovician Dounans Limestone fauna, Highland Border Complex, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 76 [for 1985], 124–33.
Isachsen, C.E., Bowring, S.A., Landing, E. and Samson, S.D. (1994) New constraint on the division of Cambrian time. Geology, 22, 496–8.
Jackson, D.E. (1961) Stratigraphy of the Skiddaw Group between Buttermere and Mungrisdale, Cumberland. Geological Magazine, 98, 515–28.
Jackson, D.E. (1962) Graptolite zones in the Skiddaw Group in Cumberland. Journal of Paleontology, 36, 300–13.
Jackson, D.E. (1979) A new assessment of the stratigraphy of the Skiddaw Group along the northern edge of main Skiddaw inlier. Proceedings of the Cumberland Geological Society, 4, 21–31.
James, D.M.D. and James, J. (1969) The influence of deep fractures on some areas of Ashgillian-Llandoverian sedimentation in Wales. Geological Magazine, 106, 562–82.
James, J. (1965) The development of a Dicellograptid from the Balclatchie Shales of Laggan Burn. Palaeontology, 8, 41–53.
Jefferies, R.P.S. (1990) The solute Dendrocystoides scoticus from the Upper Ordovician of Scotland and the ancestry of chordates and echinoderms. Palaeontology, 33, 631–79.
Jefferies, R.P.S., Lewis, M. and Donovan, S.K. (1987) Protocystites menevensis — a stem-group chordates (Cornuta) from the Middle Cambrian of South Wales. Palaeontology, 30, 429–84.
Jenkins, C.J. (1979) Stratigraphy and graptolite biostratatigraphy of the Llanvirn Series' type area, St David's, Dyfed, Wales. Unpublished PhD thesis, University of Cambridge.
Jenkins, C.J. (1982) Isograptus gibberulus (Nicholson) and the isograptids of the Arenig Series. Proceedings of the Yorkshire Geological Society, 44, 219–48.
Jenkins, C.J. (1987) The Ordovician graptoloid Didymograptus murchisoni in south Wales and its use in three-dimensional absolute strain analysis. Transactions of the Royal Society of Edinburgh: Earth Sciences, 78, 105–14.
Jenkins, W.A.M. (1967) Ordovician chitinozoa from Shropshire. Palaeontology, 10, 436–88.
Johnson, E.W., Briggs, D.E.G., Suthren, R.J., Wright, J.L. and Tunnicliff, S.P. (1994) Non-marine arthropod traces from the subaerial Ordovician Borrowdale Volcanic Group, English Lake District. Geological Magazine, 131, 395–406.
Johnson, M.R.W. and Harris, A. (1967) Dalradian–?Arenig relations in part of the Highland Border, Scotland, and their significance in the chronology of the Caledonian orogeny. Scottish Journal of Geology, 3, 1–16.
Jones, C.R. (1986–1987) Ordovician (Llandeilo and Caradoc) Beyrichiocope Ostracoda from England and Wales. Parts 1, 2. Monograph of the Palaeontographical Society, London, 114 pp.
Jones, O.T. (1923) The Hirnant Beds and the base of the Valentian. Geological Magazine, 60, 514–19.
Jones, O.T. (1940) Some Lower Palaeozoic contacts in Pembrokeshire. Geological Magazine, 77, 405–9.
Jones, O.T. and Pugh, W (1946) The complex intrusion of Welfield, near Builth Wells, Radnorshire. Quarterly Journal of the Geological Society, London, 102, 157–88, p1.13.
Jones, O.T. and Pugh, W (1948) A multi-layered dolerite complex of laccolithic form, near Llandrindod Wells, Radnorshire. Quarterly Journal of the Geological Society, London, 104, 43–70.
Jones, O.T. and Pugh, W (1949) An early Ordovician shoreline in Radnorshire, near Builth Wells. Quarterly Journal of the Geological Society. London, 105, 65–99.
Jones, R.K., Brooks, M., Bassett, M.G., Austin, R.L. and Aldridge, R.J. (1969) An Upper Llandovery limestone overlying Hollybush Sandstone (Cambrian) in Hollybush Quarry, Malvern Hills. Geological Magazine, 106, 457–69.
Jukes, J.B. (1871) Letters and extracts from the addresses and occasional writings of J. Beete Jukes, with connecting memorial notes by his sister [C.A. Browne], London, 596pp.
Jukes, J.B. and Selwyn, A.R. (1848) Sketch of the structure of the country extending from Cader Idris to Moel Siabod, North Wales. Quarterly Journal of the Geological Society, London, 4, 300–2.
Kelley, S. and Bluck, B.J. (1989) Detrital mineral ages from the Southern Uplands using 40Ar–39Ar laser probe. Journal of the Geological Society, London, 146, 401–3.
Kelling, G. (1961) The stratigraphy and structure of the Ordovician rocks of the Rhinns of Galloway. Quarterly Journal of the Geological Society, London, 117, 37–75.
Kelling, G. (1962) The petrology and sedimentation of Upper Ordovician rocks in the Rhinns of Galloway, south-west Scotland. Transactions of the Royal Society of Edinburgh, 65, 107–37.
Kelling, G., Davies, P and Holroyd, J. (1987) Style, scale and significance of sand bodies in the Northern and Central Belts, southwest Southern Uplands. Journal of the Geological Society, London, 144, 787–805.
Kennedy, R.J. (1989) Ordovician (Llanvirn) Trilobites from South West Wales. Monograph of the Palaeontographical Society London, 55 pp.
King, W.B.R. and Williams, A. (1948) On the lower part of the Ashgillian Series in the North of England. Geological Magazine, 85, 205–12.
Kneller, B.C., Scott, R.W., Soper, J., Johnson, E.W. and Allen, P.M. (1994) Lithostratigraphy of the Windermere Supergroup, Northern England. Geological Journal, 29, 219–40.
Kokelaar, B.P., Bevins, R.E. and Roach, R.A. (1985) Submarine silicic volcanism and associated sedimentary and tectonic processes, Ramsey Island, SW Wales. Journal of the Geological Society, London, 142, 591–613.
Kopstein, F.P.H.W. (1954) Graded bedding in the Harlech Dome. Rijksuniversiteit to Groningen. Geologisch Instituut publicatie, 81, 1–97.
Kuenen, P.H. (1953) Graded bedding: with observations on Lower Palaeozoic rocks in Britain. Verhhandelingen der Koninklijke Nederlandsche Akademie van Wetenschappen, Afdeeling Natuurkunde, Erste Reeks, 20 1–47.
La Touche, J.D. (1884) A Handbook of the Geology of Shropshire, E. Stanford, London, and Adnitt and Naunton, Shrewsbury, 99 pp.
Lake, P. (1906–1946) A Monograph of the British Cambrian Trilobites. Parts 1–14. Monograph of the Palaeontographical Society, London, 350 pp.
Lambert, R.St.J., Holland, J.G. and Leggett, J.K. (1981) Petrology and tectonic setting of some Ordovician volcanic rocks from the Southern Uplands of Scotland. Journal of the Geological Society, 138, 421–36.
Lamont, A. (1935) The Drummuck Group, Girvan; a stratigraphical revision with descriptions of new fossils from the lower part of the group. Transactions of the Geological Society of Glasgow, 19, 288–334.
Lamont, A. (1948) B.B. Bancroft's geological work. 2. Upper Ordovician of the Cross Fell Inlier. Quarry Manager's Journal, 31, 416–8, 466–9.
Lamont, A. (1975) Cambrian trilobites from the Pass of Leny, Perthshire, Scotland. Scottish Journal of Science, 1, 199–215.
Lamont, A. and Lindstrom, M. (1957) Arenigian and Llandeilian cherts identified in the Southern Uplands by means of conodonts, etc. Transactions of the Edinburgh Geological Society, 17, 60–70.
Landing, E. (1992) Lower Cambrian of southeastern Newfoundland. Epeirogeny and Lazarus faunas, lithofacies–biofacies linkages, and the myth of a global chronostratigraphy. In Origin and Early Evolution of the Metazoa (eds J.H. Lipps and P.W. Signor), Plenum Press, New York, pp. 283–309.
Landing, E. (1994) Precambrian–Cambrian boundary global stratotype ratified and a new perspective of Cambrian time: reply. Geology, 22, 179–82.
Landing, E. (1996) Avalon: insular continent by the latest Precambrian. Geological Society of America, Special Paper, 304, 29–63.
Landing, E., Myrow, P., Benus, A.P. and Narbonne, G.M. (1989) The Placentian Series: appearance of the oldest skeletalized faunas in southeastern Newfoundland. Journal of Paleontology, 63, 739–769. Landing, E., Bowring, S.A., Fortey, R.A. and Davidek, K.L. (1997) U-Pb zircon date from Avalonian Cape Breton Island and geochronologic calibration of the Early Ordovician. Canadian Journal of Earth Sciences, 34, 724–30.
Landing, E., Bowring, S.A., Davidek, K.L., Westrop, S.R., Geyer, G. and Heldmaier, W (1998). Duration of the Early Cambrian: U-Pb ages of volcanic ashes from Avalon and Gondwana. Canadian Journal of Earth Sciences, 35, 329–38.
Lane, P.D. (1971) British Cheiruridae (Trilobita). Monograph of the Palaeonto-graphical Society, London, 95 pp.
Lapworth, C. (1878) The Moffat Series. Quarterly Journal of the Geological Society, London, 34, 240–346.
Lapworth, C. (1879a) On the Tripartite Classification of the Lower Palaeozoic Rocks. Geological Magazine, Decade 2, 6, 1–15.
Lapworth, C. (1879b) On the geological distribution of the Rhabdophora. Annals and Magazine of Natural History, Decade 5, 3, 245–57, 449–55; Decade 5, 4, 333–41, 423–31.
Lapworth, C. (1880) On new British graptolites. Annals and Magazine of Natural History, London, Decade 5, 5, 149–77.
Lapworth, C. (1882) The Girvan succession. Quarterly Journal of the Geological Society, London, 38, 536–666.
Lapworth, C. (1883) The secret of Highlands. Geological Magazine, Decade 2, 10, 120–8, 193–9, 337–44.
Lapworth, C. (1885) The close of the Highland controversy. Geological Magazine, Decade 3, 2, 97–106.
Lapworth, C. (1886) On the sequence and systematic position of the Cambrian rocks of Nuneaton. Geological Magazine, Decade 3, 3, 319–22.
Lapworth, C. (1887) The Ordovician rocks of Shropshire. Report of the British Association for the Advancement of Science, London, 56 (Birmingham 1886), C, 661–3.
Lapworth, C. (1888) On the discovery of the Olenellus Fauna in the Lower Cambrian of Britain. Geological Magazine, Decade 3, 5, 484–7.
Lapworth, C. (1891) On Olenellus Callavei and its geological relationships. Geological Magazine, Decade 3, 8, 529–36.
Lapworth, C. (1898) A sketch of the geology of the Birmingham District. Proceedings of the Geologists' Association, 15, 313–408.
Lapworth, C. (1916) [Vertical Section of the Lower Palaeozoic rocks of the Caradoc-Wrekin Country]. Summary of Progress of the Geological Survey for 1915, 36–8.
Lapworth, C. and Watts, W.W (1894) The geology of south Shropshire. Proceedings of the Geologists' Association, 13, 297–355.
Lapworth, C. and Watts, W.W (1910) Shropshire. In Geology in the Field (4) (eds H.W. Monkton and R. Herries), Geologists' Association Jubilee Volume, pp. 739–69.
Lawrence, D.J.D., Webb, B.C., Young, B. and White, D.E. (1986) The geology of the late Ordovician and Silurian rocks (Windermere Group) in the area around Kentmere and Crook. Report of the British Geological Survey, 18, No. 5.
Leggett, J.K. (1980) British Lower Palaeozoic black shales and their palaeo-oceanographic significance. Journal of the Geological Society, London, 137, 139–56.
Leggett, J.K., McKerrow, W.S. and Eales, M.H. (1979) The Southern Uplands of Scotland: a Lower Palaeozoic accretionary prism. Journal of the Geological Society, London, 136, 755–70.
Leggett, J.K., McKerrow, W.S., Cocks, L.R.M. and Rickards, R.B. (1981) Periodicity in the early Palaeozoic marine realm. Journal of the Geological Society, London, 138, 167–76.
Leslie, S.A. and Bergström, S.M. (1995) Revision of the North American late Middle Ordovician standard age classification and timing of the Trenton transgression based on K-bentonite bed correlation. In Ordovician Odyssey: short papers for the Seventh International Symposium on the Ordovician System (eds J.D. Cooper, M.L. Droser and S.C. Finney), The Pacific Section Society for Sedimentary Geology (SEPM)., Fullerton, California, pp. 49–54.
Lespérance, P.J. (1988) Trilobites. Bulletin of the British Museum of Natural History (Geology), 43, 359–76.
Lewis, H.P. (1926) On Bolopora undosa gen. et sp. nov.: a rock-building bryozoan with phos-phatized skeleton, from the basal Arenig rocks of Ffestiniog (North Wales). Quarterly Journal of the Geological Society, London, 82, 411–27.
Lewis, M. (1987) Cambrian stratigraphy and trilobites in south-west Wales. Unpublished PhD thesis, University of Wales, Cardiff.
Lhwyd, E. (1699a) Part of a letter concerning several regularly figured stones, lately found by him. Philosophical Transactions of the Royal Society, 20 (243), 279–80.
Lhwyd, E. (1699b) Lithophylacii Britannici Ichnographia, Oxford, 1–163.
Lindholm, K. (1991). Ordovician graptolites from the early Hunneberg of southern Scandinavia. Palaeontology, 34, 283–327.
Lindström, M. (1959) Conodonts from the Crtig Limestone (Ordovician, Wales). Micropalaeontology, 5, 427–52.
Lister, T.R., Cocks, L.R.M. and Rushton, A.W.A. (1969) The basement beds in the Bobbing Borehole, Kent. Geological Magazine, 106, 601–3.
Lockley, M.G. (1980a) The geology of the Llanuwchllyn to Llanymawddwy area, south Gwynedd, North Wales. Geological Journal, 15, 21–41.
Lockley, M.G. (1980b) The Caradoc faunal associations of the area between Bala and Dinas Mawddwy, north Wales. Bulletin of the British Museum of Natural History (Geology), 33, 165–235.
Lockley, M.G. (1983) A review of brachiopod dominated palaeocommunities from the type Ordovician. Palaeontology, 26, 111–45.
Lockley, M.G. and Wilcox, C.J. (1979) A Lower Cambrian brachiopod from the Harlech Dome. Geological Magazine, 116, 63–4.
Lockley, M. and Williams, A. (1981) Lower Ordovician Brachiopoda from mid and southwest Wales. Bulletin of the British Museum of Natural History (Geology), 35, 1–78.
Löfgren, A. (1978) Arenigian and Llanvirnian conodonts from Jämtland, northern Sweden. Fossils and Strata, 13, 1–129.
Longman, C.D., Bluck, B.J. and van Breemen, O. (1979) Ordovician conglomerates and the evolution of the Midland Valley. Nature, 280, 578–81.
Longstaff, J. (1924) Descriptions of Gasteropoda, chiefly in Mrs Robert Gray's collection from the Ordovician and Lower Silurian of Girvan. Quarterly Journal of the Geological Society, London, 80, 408–46.
Lynas, B.D.T. (1973) The Cambrian and Ordovician rocks of the Migneint area, North Wales. Journal of the Geological Society, London, 129, 481–503.
Macculloch, J. (1836) Memoirs to His Majesty's Treasury Respecting a Geological Survey of Scotland, S. Arrowsmith, London.
McCurry, J.A. and Stone, P. (1996) Rhins of Galloway: a coastal traverse across the Northern and Central belts of the Southern Uplands. In Geology in South-west Scotland (eds P. Stone and D. McAdam), British Geological Survey, Keyworth, pp. 121–39.
MacGregor, M. and Phemister, J. (1972) Geological Excursion Guide to the Assynt District of Sutherland, 3rd edn, Edinburgh Geological Society.
McIlroy, D., Brasier, M.D. and Moseley, J.B. (1998) The Proterozoic–Cambrian transition within the 'Charnian Supergroup' of central England and the antiquity of the Ediacara fauna. Journal of the Geological Society, London, 155, 401–11.
McKerrow, W.S. (1978) The Ecology of Fossils, Duckworth, London.
McKerrow, W.S. (1987) The Southern Uplands Controversy. Journal of the Geological Society, London, 144, 735–6.
McKerrow, W.S. and Elders, C.F. (1989) Movements on the Southern Upland fault. Journal of the Geological Society, London, 146, 393–5.
McKerrow, W.S., Lambert, R.St.J. and Cocks, L.R.M. (1985) The Ordovician, Silurian and Devonian periods. In The Chronology of the Geological Record (ed. N.J. Snelling), Memoir of the Geological Society of London, 10, pp. 73–80.
McKie, T. (1990a) Tidal and storm-influenced sedimentation from a Cambrian transgressive passive margin sequence. Journal of the Geological Society, London, 147, 785–94.
McKie, T. (1990b) A model for marine shelf storm deposition in the Lower Cambrian Fucoid Beds of northwest Scotland. Geological Magazine, 127, 45–53.
McKie, T. (1990c) Tidal sandbank evolution in the Lower Cambrian Salterella Grit. Scottish Journal of Geology, 26, 77–88.
McKie, T. (1993) Relative sea-level changes and the development of a Cambrian transgression. Geological Magazine, 130, 245–56.
McKie, T. and Donovan, S.K. (1992) Lower Cambrian echinoderm ossicles from the Fucoid Beds, northwest Scotland. Scottish Journal of Geology, 28, 49–53.
McNair, P (1908) The Geology and Scenery of the Grampians, Vol. I, J. MacLehose, Glasgow, 195 pp.
McNamara, K. (1978) Paedomorphosis in Scottish olenellid trilobites (early Cambrian). Palaeontology, 21, 635–55.
McNamara, K.J. (1979a) The age, stratigraphy and genesis of the Coniston Limestone Group in the southern Lake District. Geological Journal, 14, 41–68.
McNamara, K.J. (1979b) Trilobites from the Coniston Limestone Group (Ashgill Series) in the southern Lake District of northern England. Palaeontology, 22, 53–92.
McNamara, K.J. (1980) Taxonomy and distribution of chasmopine trilobites. Geological Magazine, 117, 65–80.
McNamara, K.J. and Fordham, B.G. (1981) Mid-Cautleyan (Ashgill Series) trilobites and facies in the English Lake District. Palaeogeography, Palaeoclimatology, Palaeoecology, 34, 137–61.
Maletz, J. and Erdtmann, B.-D. (1987) Adelograptus tenellus (Linnarsson, 1871): its asto-genetic development and its stratigraphical and palaegeographical distribution. Bulletin of the Geological Society of Denmark, 35, 179–90.
Maletz, J., Rushton, A.W.A. and Lindholm, K. (1991) A new Ordovician Didymograptid, and its bearing on the correlation of the Skiddaw Group of England with the 'Wen Shale of Scandinavia. Geological Magazine, 128, 335–43.
Marr, J.E. (1876) Fossiliferous Cambrian shales near Caernarvon. Quarterly Journal of the Geological Society, London, 32, 134–9.
Marr, J.E. (1892) The Coniston Limestone Series. Geological Magazine, Decade 3, 9, 97–110.
Marr, J.E. (1905) Anniversary address [The classification of the sedimentary rocks]. Proceedings in Quarterly Journal of the Geological Society, London, 61, lxi-lxxxvi.
Marr, J.E. (1906) On the stratigraphical relations of the Dutton Shales and Keisley Limestone of the Cross Fell hiller. Geological Magazine, Decade 5, 3, 481–7.
Marr, J.E. (1907) On the Ashgillian Series. Geological Magazine Decade 5, 4, 59–69.
Marr, J.E. (1913) The Lower Palaeozoic rocks of the Cautley district (Yorkshire). Quarterly Journal of the Geological Society, London, 69, 1–18.
Marr, J.E. (1916) The Ashgillian succession in the tract to the west of Coniston Lake. Quarterly Journal of the Geological Society, London, 71, 189–204.
Marr, J.E. and Nicholson, H.A. (1888) The Stockdale Shales. Quarterly Journal of the Geological Society, London, 44, 654–732.
Marr, J.E. and Roberts, T. (1885) The Lower Palaeozoic rocks of the neighbourhood of Haverfordwest. Quarterly Journal of the Geological Society, London, 41, 476–91.
Matley, C.A. (1928) The Pre-Cambrian Complex and associated rocks of south-western Lleyn (Carnarvonshire). Quarterly Journal of the Geological Society, London, 84, 440–504.
Matley, C.A. (1932) The geology of the country around Mynydd Rhiw and Sarn, south-western Lleyn, Carnarvonshire. Quarterly Journal of the Geological Society, London, 88, 238–73.
Matley, C.A. and Wilson, T.S. (1946) The Harlech Dome, north of the Barmouth estuary. Quarterly Journal of the Geological Society, London, 102, 1–40.
Matthews, S.C. and Missarzhevsky, V.V. (1975) Small shelly fossils of late Precambrian and early Cambrian age: a review of recent work. Quarterly Journal of the Geological Society, London, 131, 289–304.
Merriman, R. J. and Roberts, B. (1990) Metabentonites in the Moffat Shale Group, Southern Uplands of Scotland: geochemical evidence of cnsialic marginal basinal volcanism. Geological Magazine, 127, 259–71.
Miliward, D. and Lawrence, D.J.D. (1985) The Stockdale (Yarlside) Rhyolite — a rheomorphic ignimbrite? Proceedings of the Yorkshire Geological Society, 45, 299–306.
Milne Edwards, H. and Haime, J. (1855) The Fossil Corals, Part 5, Silurian. Monograph of the Palaeontographical Society London, 245–322.
Mitchell, C. (1992) Evolution of the Diplograptacea and the international correlation of the Arenig–Llanvirn boundary. In Global Perspectives on Ordovician Geology (eds B.D. Webby and J.R. Laurie), Balkema, Rotterdam, 171–83.
Mitchell, C. and Chen Xu (1995) International correlation of the Undulograptus austrodentatus Zone. Palaeoworld, 5, 75–85.
Mitchell, C. and Maletz, J. (1995) Proposal for adoption of the base of the Undulograptus austrodentatus Biozone as a global Ordovician stage and series boundary level. Lethaia, 28, 317–31.
Mohr, P A. (1956) A geochemical study of the Lower Cambrian managanese ore of the Harlech Dome, North Wales. In Symposium sobra yacimientos de manganeso, XX Congreso Geologico Internacional, Mexico, 5, 273–89.
Mohr, P.A. (1964) Genesis of the Cambrian manganese carbonate rocks of North Wales. Journal of Sedimentary Petrology, 34, 819–29.
Mohr, P.A. and Allen, R. (1965) Further considerations on the deposition of the Middle Cambrian manganese carbonate beds of Wales and Newfoundland. Geological Magazine, 102, 328–37.
Molyneux, S.G. (1988) Micropalaeontological evidence for the age of the Borrowdale Volcanic Group. Geological Magazine, 125, 541–2.
Molyneux, S.G. (1991) The contribution of palaeontological data to an understanding of the early Palaeozoic framework of eastern England. Annales de la Société Géologique de Belgique, 114, 93–105.
Molyneux, S.G. (1998) An upper Dalradian microfossil reassessed. Journal of the Geological Society, London, 155, 741–3.
Molyneux, S.G. and Rushton, A.W.A. (1985) Discovery of Tremadoc rocks in the Lake District. Proceedings of the Yorkshire Geological Society, 45 [for 1984], 123–7.
Molyneux, S.G. and Rushton, A.W.A. (1988) The age of the Watch Hill Grits (Ordovician), English Lake District: structural and palaeogeographical implications. Transactions of the Royal Society of Edinburgh: Earth Sciences, 79, 43–69.
Molyneux, S.G., Le Herisse, A. and Wicander, R. (1996) Paleozoic phytoplankton. In Palynology: Principles and Applications (eds J. Jansonius and D.C. McGregor), American Association of Stratigraphic Palynologists Foundation, 2, 493–529.
Morris, J.H. (1987) The Northern Belt of the Longford–Down Inlier, Ireland and Southern Uplands, Scotland: an Ordovician back-arc basin. Journal of the Geological Society, London, 144, 773–86.
Morris, S.F. (1988) A Review of British Trilobites, including a Synoptic Revision of Salter's Monograph. Monograph of the Palaeontographical Society 140, Publication No. 574, 316 pp.
Morris, T.O. and Fearnsides, W.G. (1926) The stratigraphy and structure of the Cambrian Slate Belt of Nantlle (Carnarvonshire). Quarterly Journal of the Geological Society, London, 82, 250–303.
Murchison, R.I. (1835) On the Silurian System of rocks. London and Edinburgh Philosophical Magazine and Journal of Science, 7 (3), 46–52.
Murchison, R.I. (1839) The Silurian System. John Murray, London.
Murchison, R.I. (1859) On the succession of the older rocks in the northernmost counties of Scotland; with some observations on the Orkney and Shetland Islands. Quarterly Journal of the Geological Society, London, 15, 353–421.
Murchison, R.I. (1860) Supplemental observations on the order of the ancient stratified rocks of the north of Scotland and their associated eruptive rocks. Quarterly Journal of the Geological Society, London, 16, 215–40.
Murchison, R.I. (1867) Siluria, 3rd edn, John Murray, London.
Murchison, R.I. (1872) Siluria, 4th edn, John Murray, London.
Murchison, R.I. and Geikie, A. (1861) On the altered rocks of the western isles of Scotland, and the north-western and central Highlands. Quarterly Journal of the Geological Society, London, 17, 171–232.
Murray, J.W. (ed.) (1985) Atlas of Invertebrate Macrofossils, Longman and the Palaeontological Association, Harlow, 241 pp.
Neuman, R.B. and Bates, D.E.B. (1978) Reassessment of Arenig and Llanvirn age (early Ordovician) brachiopods from Anglesey, north-west Wales. Palaeontology, 21, 571–613.
Nicholas, C.J. (1994) New stratigraphical constraints on the Durness Group of NW Scotland. Scottish Journal of Geology, 30, 73–85.
Nicholas, T.C. (1915) The geology of the St Tudwal's Peninsula (Carnarvonshire). Quarterly Journal of the Geological Society, London, 71, 83–143.
Nicholas, T.C. (1916) Notes on the trilobite fauna of the Middle Cambrian of the St Tudwal's Peninsula (Carnarvonshire). Quarterly Journal of the Geological Society, London, 71, 451–72.
Nicholson, H.A. and Marr, J.E. (1891) The Cross Fell Inlier. Quarterly Journal of the Geological Society, London, 47, 500–12.
Nicol, J. (1857) On the red sandstone and conglomerate, and the superposed quartz-rocks, limestones, and gneiss of the north-west coast of Scotland. Quarterly Journal of the Geological Society, London, 13, 17–39.
Nicol, J. (1861) On the structure of the northwestern Highlands, and the relationship of the gneiss, red sandstone, and quartzite of Sutherland and Ross-shire. Quarterly Journal of the Geological Society, London, 17, 85–113.
Nicol, J. (1863) On the geological structure of the southern Grampians. Quarterly Journal of the Geological Society, London, 19, 180–209.
Norford, B. (1988) Introduction to papers on the Cambrian–Ordovician boundary. Geological Magazine, 125, 323–6.
Old, R.A., Sumbler, M.G. and Ambrose, K. (1987) Geology of the Country around Warwick. Memoir of the British Geological Survey, Sheet 184 (England and Wales), HMSO, London.
Old, R.A., Hamblin, R.J.O., Ambrose, K. and Warrington, G. (1991) Geology of the country around Redditch. Memoir of the British Geological Survey, Sheet 183 (England and Wales), HMSO, London.
Oldroyd, D.R. (1990) The Highlands Controversy. University of Chicago Press.
Oldroyd, D.R. (1996) Sir Archibald Geikie (1835–1924) and the 'Highlands Controversy': new archival sources for the history of British geology in the nineteenth century. Earth Sciences History, 15, 141–150.
Öpik, A.A. (1966) The Ordian Stage of the Cambrian and its Australian Metadoxididae. Bulletin of the Bureau of Mineral Resources, Geology and Geophysics, 92, 133–68.
Orchard, M.J. (1980) Upper Ordovician conodonts from England and Wales. Geologica et Palaeontologica, 14, 9–44.
Orłowski, S. (1992) Cambrian stratigraphy and stage subdivision in the Holy Cross Mountains, Poland. Geological Magazine, 129, 471–4.
Orr, P.J. (1996) The ichnofauna of the Skiddaw Group (early Ordovician) of the Lake District, England. Geological Magazine, 133, 193–216.
Owen, A.W. (1980) The trilobite Tretaspis from the upper Ordovician of the Oslo region, Norway. Palaeontology, 23, 715–47.
Owen, A.W. (1986) The uppermost Ordovician (Hirnantian) trilobites of Girvan, SW Scotland, with a review of coeval trilobite faunas. Transactions of the Royal Society of Edinburgh: Earth Sciences, 77, 231–9.
Owen, A.W. (1987) The trilobite Tretaspis at the Middle-Upper Ordovician boundary in Västergötland. Geologiska Föreningens Stockholm Förhandlingar, 109, 259–66.
Owen, A.W. and Clarkson, E.N.K. (1992) Trilobites from Kilbucho and Wallace's Cast and the location of the Northern Belt of the Southern Uplands during the late Ordovician. Scottish Journal of Geology, 28, 3–17.
Owen, A.W. and Ingham, J.K. (1988) The stratigraphical distribution and taxonomy of the trilobite Onnia in the type Onnian Stage of the uppermost Caradoc. Palaeontology, 31, 829–55.
Owen, A.W. and Ingham, J.K. (1996) Trilobites. In Fossils of the Upper Ordovician (eds D.A.T. Harper and A.W. Owen), Palaeontological Association, London, pp. 138–73.
Owen, A.W. and Robertson, D.B.R. (1995) Ecological changes during the end-Ordovician extinction. Modern Geology, 20, 21–39.
Owen, A.W., Harper, D.A.T. and Rong, Jia-yu (1991) Hirnantian trilobites and brachiopods in space and time. In Advances in Ordovician Geology (eds C.R. Barnes and S.H. Williams), Geological Survey of Canada Paper 90–9, pp. 179–90.
Owen, T.R., Bloxam, T.W., Jones, D.G., Walmsley, V.G. and Williams, B.P.J. (1971) Summer (1968) field meeting in Pembrokeshire, South Wales. Proceedings of the Geologists' Association, 82, 17–60.
Owens, R.M. (1973) British Ordovician and Silurian Proetidae (Trilobita). Monograph of the Palaeontographical Society London, 98 pp.
Owens, R.M. (1984) Trilobites in Wales, Geology Series No. 7, National Museum of Wales, Cardiff, 22 pp.
Owens, R.M., Fortey, R.A., Cope, J.C.W., Rushton, A.W.A. and Bassett, M.G. (1982) Tremadoc faunas from the Carmarthen district, South Wales. Geological Magazine, 119, 1–38.
Palmer, A.R. and James, N.P. (1980) The Hawke Bay event: a circum-Iapetus regression near the Lower-Middle Cambrian boundary. Memoir of the Virginia Polytechnic Institute and State University, Department of Geological Sciences, 2, 15–8.
Palmer, D. and Rickards, R. (eds) (1991) Graptolites. Writing in the Rocks, Boydell, Woodbridge, 182 pp.
Palmer, T.J., McKerrow, W.S. and Cowie, J.W. (1980) Sedimentological evidence for a stratigraphical break in the Durness Group. Nature, 287, 720–2.
Patchett, P.J., Gale, N.H., Goodwin, R. and Humm, M.J. (1980) Rb-Sr whole-rock isochron ages of late Precambrian to Cambrian igneous rocks from southern Britain. Journal of the Geological Society, London, 137, 649–56.
Paul, C.R.C. (1973–1997) British Ordovician Cystoids, Parts 1–3. Monograph of the Palaeontographical Society, London, 213 pp.
Paul, C.R.C. and Cope, J.C.W. (1982) A parablastoid from the Arenig of south Wales. Palaeontology, 25, 499–507.
Peach, B.N. (1894) Additions to the Olenellus-zone of the North-West Highlands. Quarterly Journal of the Geological Society, London, 50, 661–76.
Peach, B.N. and Horne, J. (1892) The Olenellus Zone in the North-West Highlands of Scotland. Quarterly Journal of the Geological Society, London, 48, 227–42.
Peach, B.N. and Horne, J. (1899) The Silurian Rocks of Britain, Vol. I. Scotland. Memoirs of the Geological Survey of the United Kingdom, HMSO, London.
Peach, B.N., Horne, J., Gunn, W, Clough, C.T., Hinxman, L.W. and Cadell, H.M. (1888) Report on the recent work of the Geological Survey in the north-west Highlands of Scotland. Quarterly Journal of the Geological Society, London, 44, 378–441.
Peach, B.N., Horne, J., Gunn, W, Clough, C.T., Hinxman, L.W. and Teall, J.J.H. (1907) The Geological Structure of the North-west Highlands of Scotland. Memoir of the Geological Survey of Great Britain, HMSO, London.
Pearson, P.N. and Nicholas, C.J. (1992) Defining the base of the Cambrian: the Hicks–Geikie confrontation of April 1883. Earth Science History, 11, 70–80.
Phillips, E.R., Barnes, R.P., Merriman, R.J. and Floyd, J.D. (1995) The tectonic significance of Ordovician basic igneous rocks in the Southern Uplands, southwest Scotland. Geological Magazine, 132, 549–56.
Phillips, J. (1848) The Malvern Hills, Compared with the Palaeozoic Districts of Abberley, Woolhope, May Hill, Tortworth, and Usk. Memoir of the Geological Survey of Great Britain, Vol. 2, Part 1.
Piper, J.D.A., Stephen, J.C. and Branney, M.J. (1997) Palaeomagnetism of the Borrowdale Volcanic Group, English Lake District: primary and secondary magnetization during a single late Ordovician polarity chron. Geological Magazine, 134, 481–506.
Pocock, R.W., Whitehead, T.H., Wedd, C.B. and Robertson, T. (1938) Shrewsbury District including the Hanwood Coalfield. Memoir of the Geological Survey of Great Britain, Sheet 152 (England and Wales), HMSO, London.
Ponsford, D.R.A. (1955) Radioactivity studies of some British sedimentary rocks. Bulletin of the Geological Survey of Great Britain, 10, 24–44.
Pratt, W.T. (1991) The Nod Glas décollement of the Welsh Basin. Geological Magazine, 128. 279–82.
Pratt, W.T., Woodhall, D.G. and Howells, M.F. (1995) Geology of the Country around Cadair Idris. Memoir of the British Geological Survey, Sheet 149 (England and Wales), The Stationery Office, London.
Price, D. (1973a) The age and stratigraphy of the Sholeshook Limestone of southwest Wales. Geological Journal, 8, 225–46.
Price, D. (1973b) The Phillipsinella parabola–Staurocephalus clavifrons fauna and Upper Ordovician correlation. Geological Magazine, 110, 535–41.
Price, D. (1974) Trilobites from the Sholeshook Limestone (Ashgill) of south Wales. Palaeontology, 17, 841–68.
Price, D. (1977) Species of Tretaspis (Trilobita) from the Ashgill Series in Wales. Palaeontology, 20, 763–792.
Price, D. (1980a) A revised age and correlation for the topmost Sholeshook Limestone Formation (Ashgill) of south Wales. Geological Magazine, 117, 485–9.
Price, D. (1980b) The Ordovician trilobite fauna of the Sholeshook Limestone Formation, south Wales. Palaeontology, 23, 839–87.
Price, D. (1981) Tretaspis radialis Lamont and allied species (Trilobita). Geological Magazine, 118, 289–95.
Price, D. (1982) Calymene quadrata King 1923 and allied species of trilobites from the Ashgill Series of North Wales. Geological Magazine, 119, 57–66.
Price, D. (1984) The Pusgillian Stage in Wales. Geological Magazine, 121, 99–105.
Price, D. and Magor, P.M. (1984) The ecological significance of variation in generic composition of Rawtheyan (late Ordovician) trilobite faunas from North Wales, UK. Geological Journal, 19, 187–200.
Prigmore, J.K. (1994) Sedimentology of Upper Cambrian and Lower Ordovician Mudstones across Eastern Avalonia. Unpublished PhD thesis, University of Cambridge.
Prigmore, J.K., Butler, A.J. and Woodcock, N.H. (1997) Rifting during separation of eastern Avalonia from Gondwana: evidence from subsidence analysis. Geology, 25, 203–6.
Pringle, J. (1911) Note on the 'Lower Tremadoc' rocks of St David's, Pembrokeshire. Geological Magazine, Decade 5, 8, 556–9.
Pringle, J. (1930) The geology of Ramsey Island (Pembrokeshire). Proceedings of the Geologists' Association, 41, 1–31, 3pls.
Pringle, J. (1939) The discovery of Cambrian trilobites in the Highland Border rocks near Callander, Perthshire. Advancement of Science, 1, 252.
Pringle, J. and George, T.N. (1948) British Regional Geology. South Wales, 2nd edn, HMSO, London, 100 pp
Pugh, W.J. (1923) The geology of the district around Corris and Aberllefenni (Merionethshire). Quarterly Journal of the Geological Society, London, 79, 508–41.
Pugh, W.J. (1928) The geology of the district around Dinas Mawddwy (Merioneth). Quarterly Journal of the Geological Society, London. 84, 345–81.
Ramsay, A.C. (1866) The Geology of North Wales. Memoir of the Geological Survey of Great Britain, Vol. 3, 381 pp.
Ramsay, A.C. (1881) The Geology of North Wales, 2nd edn. Memoir of the Geological Survey of Great Britain, Vol. 3, 611 pp.
Ramsay, D.M. (1976) An additional criterion in the Aberrant Fold relationship. Tectonophysics, 31, T1-T4.
Ramsbottom, W.H.C. (1961) A Monograph of the British Ordovician Crinoidea. Monograph of the Palaeontographical Society London, 37 pp.
Rasetti, E (1945) Fossiliferous horizons in the 'Sillery Formation' near Levis, Quebec. American Journal of Science, 243, 305–19.
Rasul, S.M. (1979) Acritarch zonation of the Tremadoc Series of the Shineton Shales, Wrekin, Shropshire, England. Palynology, 3, 53–72.
Raw, F. (1925) The development of Leptoplastus salteri and other trilobites. Quarterly Journal of the Geological Society, London, 81, 223–324.
Raw, F. (1936) Mesonacidae of Comley in Shropshire, with a discussion of classification within the family. Quarterly Journal of the Geological Society, London, 92, 236–93.
Reed, F.R.C. (1895) The geology of the country around Fishguard, Pembrokeshire. Quarterly Journal of the Geological Society, London, 51, 149–95.
Reed, F.R.C. (1896) The fauna of the Keisley Limestone, Part I. Quarterly Journal of the Geological Society, London, 52, 407–37.
Reed, F.R.C. (1897) The fauna of the Keisley Limestone. Part II. Quarterly Journal of the Geological Society, London, 53, 67–106.
Reed, F.R.C. (1904) Sedgwick Museum notes. New fossils from the Haverfordwest district. II.Geological Magazine, Decade 5, 1, 383–8.
Reed, F.R.C. (1905) Sedgwick Museum notes. New fossils from the Haverfordwest district. III.Geological Magazine, Decade 5, 2, 97–104.
Reed, F.R.C. (1908) Sedgwick Museum notes. New fossils from the Haverfordwest district. VIII. Geological Magazine, Decade 5, 5, 433–6.
Reed, F.R.C. (1920–1921) The British Ordovician and Silurian Bellerophontacea, Parts 1 and 2. Monograph of the Palaeo-ntographical Society, London, 92 pp.
Reed, F.R.C. (1935) Palaeontological evidence of the age of the Craighead Limestone. Transactions of the Geological Society of Glasgow, 19, 340–72.
Reedman, A.J., Leveridge, B.E. and Evans, R.B. (1984) The Arfon Group ('Arvonian') of North Wales. Proceedings of the Geologists' Association, 95, 313–21.
Reedman, A.J., Webb, B.C., Addison, R., Lynas, B.D.T., Leveridge, B.E. and Howells, M.F. (1983) The Cambrian–Ordovician boundary between Aber and Betws Garmon, Gwynedd, North Wales. Report of the Institute of Geological Sciences, No. 83/1, pp. 7–10.
Rhodes, F.H.T. (1955) The conodont fauna of the Keisley Limestone. Quarterly Journal of the Geological Society, London, 111, 117–42.
Rickards, R.B. (1970) The Llandovery (Silurian) Graptolites of the Howgill Fells, Northern England. Monograph of the Palaeontographical Society, London, 108 pp.
Rickards, R.B. (1973) The structure at Abereiddy Bay, Pembrokeshire. Geological Magazine, 110, 185–7.
Rickards, R.B. (1978) Silurian. In The Geology of the Lake District (ed. E Moseley), Yorkshire Geological Society Occasional Publication No. 3, pp. 130–45.
Rickards, R.B. (1988) Base of the Silurian in the Lake District and Howgill Fells. In A Global Analysis of the Ordovician–Silurian boundary (eds L.R.M. Cocks and R.B. Rickards), Bulletin of the British Museum Natural History (Geology), 43, 53–7.
Ridgway, J. (1975) The stratigraphy of Ordovician volcanic rocks around the south and east of the Harlech Dome in Merionethshire, North Wales. Geological Journal, 10, 87–106.
Riding, R., Cope, J.C.W. and Taylor, P.D. (1998) A coralline-like red alga from the lower Ordovician of Wales. Palaeontology, 41, 1069–76.
Roberts, B. (1979) The Geology of Snowdonia and Llŷn: An Outline and Field Guide, Adam Hilger, Bristol.
Roberts, B. and Merriman, R.J. (1990) Cambrian and Ordovician metabentonites and their relevance to the origins of associated mudrocks in the northern sector of the Lower Palaeozoic Welsh marginal basin. Geological Magazine, 127, 31–43.
Robison, R.A. (1994) Agnostoid trilobites from the Henson Gletscher and Kap Stanton formations (Middle Cambrian), North Greenland. Bulletin Grönlands geologiske Undersogelse, 169, 25–77.
Rong, Jia-yu and Harper, D.A.T. (1988) A global synthesis of the latest Ordovician Hirnantian brachiopod faunas. Transactions of the Royal Society of Edinburgh: Earth Sciences, 79, 383–402.
Ross, R.J. Jnr., Naesner, C.W. and Izett, G.A. (1976) Apatite fission-track dating of a sample from the type Caradoc (Ordovician) Series in England. Geology, 4, 505–6.
Ross, R.J. Jnr., Naesner, C.W, Izett, G.A. et al. (1982) Fission-track dating of British Ordovician and Silurian stratotypes. Geological Magazine, 119, 135–53.
Ross, R.J. Jnr., Hintze, L.F., Ethington, R.L., Miller, J.F., Taylor, M.E. and Repetski, J.E. (1997) The Ibexian, lowermost series in the North American Ordovician. US Geological Survey Professional Paper No. 1579-A, pp. 1–48.
Rozanov, A.Yu. (1995) Precambrian–Cambrian boundary global stratotype ratified and a new perspective of Cambrian time: comment. Geology, 23, 285.
Ruddy, T. (1879) On the upper part of the Cambrian (Sedgwick) and the base of the Silurian in North Wales. Quarterly Journal of the Geological Society, London, 35, 200–8.
Ruddy, T. (1885) List of Caradoc or Bala fossils found in the neighbourhood of Bala, Corwen and Glyn-Ceiriog. Proceedings of the Chester Society of Natural History, 3, 113–24.
Rushton, A.W.A. (1966) The Cambrian Trilobites from the Purley Shales of Warwickshire, Monograph of the Palaeontographical Society, London, 55 pp.
Rushton, A.W.A. (1974) The Cambrian of Wales and England. In The Cambrian of the British Isles, Norden, and Spitsbergen (ed. C.H. Holland), John Wiley, London, pp. 43–121.
Rushton, A.W.A. (1978) Fossils from the Middle-Upper transition in the Nuneaton district. Palaeontology, 21, 245–83.
Rushton, A.W.A. (1979) A review of the Middle Cambrian Agnostida from the Abbey Shales, England. Alcheringa, 3, 43–61.
Rushton, A.W.A. (1982) The biostratigraphy and correlation of the Merioneth–Tremadoc Series boundary in North Wales. In The Cambrian–Ordovician Boundary: Sections, Fossil Distributions and Correlations (eds M.G. Bassett and W.T. Dean), National Museum of Wales, Geological Series No. 3, Cardiff, pp. 41–59.
Rushton, A.W.A. (1983) Trilobites from the Upper Cambrian Olenus Zone in central England. Special Papers in Palaeontology, 30, 107–39.
Rushton, A.W.A. (1985) A Lancefieldian graptolite from the Lake District. Geological Magazine, 122, 329–33.
Rushton, A.W.A. (1988) Tremadoc trilobites from the Skiddaw Group in the English Lake District. Palaeontology, 31, 677–98.
Rushton, A.W.A. (1990) Ordovician graptolite biostratigraphy in the Welsh Basin: a review. Journal of the Geological Society, London, 147, 611–14.
Rushton, A.W.A. (1993) Hartfell Score. In Scottish Borders Geology. An Excursion Guide (eds A.D. McAdam, E.N.K. Clarkson and P. Stone), Edinburgh Geological Society, Scottish Academic Press, pp. 173–9.
Rushton, A.W.A. and Howells, M.F. (1998) Stratigraphical framework for the Ordovician of Snowdonia and the Lleyn Peninsula. British Geological Survey Technical Report RR 98/1.
Rushton, A.W.A. and Hughes, C.P. (1981) The Ordovician trilobite fauna of the Great Paxton Borehole, Cambridgeshire. Geological Magazine, 118, 623–46.
Rushton, A.W.A. and Hughes, N.C. (1996) Biometry, systematics and biogeography of the late Cambrian trilobite Maladioidella abdita. Transactions of the Royal Society of Edinburgh: Earth Sciences, 86, 247–56.
Rushton, A.W.A. and Smith, M. (1993) Retrodeformation of fossils — a simple technique. Palaeontology, 36, 927–30.
Rushton, A.W.A. and Stone, P. (1988) Graptolite faunas from the Ballantrae Complex. Scottish Journal of Geology, 24, 93–5.
Rushton, A.W.A. and Stone, P. (1991) Terrigenous input to the Moffat Shale sequence, Southern Uplands. Scottish Journal of Geology, 27, 167–9.
Rushton, A.W.A. and Tunnicliff, S.P. (1996) Graptolites. In Geology in South-west Scotland (eds P. Stone and D. McAdam), British Geological Survey, Keyworth, pp. 165–78.
Rushton, A.W.A. and Williams, M. (1997) The tailpiece of the crustacean Caryocaris wrightii from the Arenig rocks of England and Ireland. Irish Journal of Earth Sciences, 15 [for 1996], 107–11.
Rushton, A.W.A., Fortey, R.A. and Owens, R.A. (1979) Excavation of two candidate sections for stratotypes in Wales by the Nature Conservancy Council. Earth Science Conservation, 16, 1–5.
Rushton, A.W.A., Stone, P., Smellie, J.L. and Tunnicliff, S.P. (1986) An early Arenig age for the Pinbain sequence of the Ballantrae Complex. Scottish Journal of Geology, 22, 41–54.
Rushton, A.W.A., Hamblin, R.J.O. and Strong, G.E. (1988). The Croft Borehole in the Lilleshall Inlier of north Shropshire. Report of the British Geological Survey, 19 (3), 14 pp.
Rushton, A.W.A., Stone, P. and Hughes, R.A. (1996a) Biostratigraphical control of thrust models for the Southern Uplands of Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 86, 137–52.
Rushton, A.W.A., Tunnicliff, S.P. and Tripp, R.P. (1996b) The faunas of the Albany Group in the Girvan area, and their palaeogeographical implications. Scottish Journal of Geology, 32, 23–32.
Sadler, P.M. (1974) Trilobites from the Gorran Quartzites, Ordovician of south Cornwall. Palaeontology, 17, 71–93.
Salter, J.W. (1853) Figures and Descriptions Illustrative of British Organic Remains, Decade VII, Memoir of the Geological Survey of the United Kingdom, 78 pp.
Salter, J.W. (1859) Fossils of the Durness Limestone. Quarterly Journal of the Geological Society, London, 15, 374–81.
Salter, J. W (1863) On the discovery of Paradoxides in Britain. Quarterly Journal of the Geological Society, London, 19, 274–7.
Salter, J.W. (1864a) Figures and Descriptions of British Organic Remains. Decade XI. Trilobites. Memoirs of the Geological Survey of the United Kingdom, 64 pp.
Salter, J.W. (1864b) On some new fossils from the Lingula-flags of Wales. Quarterly Journal of the Geological Society, London, 20, 233–41.
Salter, J.W. (1864–1883) A Monograph of the British Trilobites from the Cambrian, Silurian and Devonian Formations. Parts 1–5. Monograph of the Palaeontographical Society, London, 224 pp.
Salter, J.W. (1866a) Notes on the sections and fossils [of the Lingula Flags of South Wales]. Report of the 35th meeting of the British Association for the Advancement of Science (Birmingham, 1865), pp. 284–6.
Salter, J.W. (1866b) On the fossils of North Wales. In The Geology of North Wales (ed. A.C. Ramsay), Memoirs of the Geological Survey of Great Britain, 3, 239–363, 3, 72–81.
Salter, J.W. (1873) A catalogue of the Cambrian and Silurian fossils in the geological museum of the University of Cambridge, Cambridge, 204 pp.
Salter, J.W. and Aveline, W.T. (1854) On the 'Caradoc Sandstone' of Shropshire. Quarterly Journal of the Geological Society, 10, 62–75.
Salter, J.W. and Hicks, H. (1869) On some fossils from the 'Menevian Group'. Quarterly Journal of the Geological Society, London, 25, 51–7.
Savage, N.M. and Bassett, M.G. (1985) Caradoc–Ashgill conodont faunas froin Wales and the Welsh Borderland. Palaeontology, 28 [issued 1986], 679–713.
Schiener, E.J. 1970. Sedimentology and petrography of three tuff horizons in the Caradocian sequence of the Bala area (North Wales). Geological Journal 7, 25–46.
Scott, R.W. and Kneller, B.C. (1990) A report on the Ashgill and Llandovery rocks of Sheet 38 (Ambleside). British Geological Survey Technical Report WA/90/63.
Scrutton, C.T.., Jeram, A. and Armstrong, H.A. (1998) Kilbuchophyllid corals from the Ordovician (Caradoc) of Pomeroy, Co. Tyrone: implications for coral phylogeny and for movement on the Southern Upland Fault. Transactions of the Royal Society of Edinburgh: Earth Sciences, 88 [for 1997], 117–26.
Secord, J.A. (1986) Controversy in Victorian Geology: The Cambrian–Silurian Dispute, Princeton University Press, Princeton.
Sedgwick, A. (1843) Outline of the geological structure of North Wales. Proceedings of the Geological Society, London, 4, 212–24.
Sedgwick, A. (1844) On the older Palaeozoic (Proterozoic) rocks of North Wales. Proceedings of the Geological Society, London, 4, 251–68.
Sedgwick, A. (1845) On the comparative classification of the fossiliferous strata of North Wales with the corresponding deposits of Cumberland, Westmoreland and Lancashire. Proceedings of the Geological Society, London, 4, 576–84.
Sedgwick, A. (1852) On the classification and nomenclature of the Lower Palaeozoic rocks of England and Wales. Quarterly Journal of the Geological Society, London, 8, 136–68.
Sedgwick, A. and Murchison, R.I. (1835) On the Cambrian and Ordovician systems, exhibiting the order in which the older sedimentary strata succeed each other in England and Wales. The London and Edinburgh Philosophical Magazine and Journal of Science, 7, 483–5.
Sepkoski, J.J. (1981) A factor analytic description of the Phanerozoic marine fossil record. Paleobiology, 7, 36–53.
Sepkoski, J.J. (1990) Evolutionary faunas. In Palaeobiology: A Synthesis (eds D.E.G. Briggs and P.R. Crowther), Blackwell, Oxford, pp. 37–41.
Servais, T. and Katzung, G. (1993) Acritarch dating of Ordovician sediments of the Island of Rügen (NE Germany). Neues Jahrbuch für Geologie and Paläontologie, Monatsheft, 1993, 713–23.
Shackleton, R.M. (1956) Notes on the structure and relations of the Pre-Cambrian and Ordovician rocks of south-western Lleyn (Carnarvonshire). Liverpool and Manchester Geological Journal, 1, 400–9.
Shackleton, R.M. (1959) The stratigraphy of the Moel Hebog district between Snowdon and Tremadoc. Liverpool and Manchester Geological Journal, 2, 216–252.
Shaw, F.C. and Fortey, R.A. (1977) Middle Ordovician facies and trilobite faunas in N. America. Geological Magazine, 114, 409–43.
Sheldon, P.R. (1987a) Parallel gradualistic evolution of Ordovician trilobites. Nature, 330, 561–3.
Sheldon, P.R. (1987b) Trilobite evolution and faunal distribution in some Ordovician rocks of the Builth inlier, central Wales. Unpublished PhD thesis, University of Cambridge.
Sheldon, P.R. (1988) Trilobite size-frequency distributions, recognition of instars, and phyletic size changes. Lethaia, 21, 293–306.
Shirley, J. (1936) Some trilobites of the Family Calymenidæ. Quarterly Journal of the Geological Society, London, 92, 384–422.
Sinclair, G.W. (1949) Footnotes on Eobronteus. Journal of Paleontology, 23, 571.
Siveter, David J. and Williams, M. (1995) An early Cambrian assignment for the Caerfai Group of South Wales. Journal of the Geological Society, London, 152, 221–4.
Siveter, Derek J., Ingham, J.K., Rickards, R.B. and Arnold, B. (1980) Highest Ordovician trilobites and graptolites from County Cavan, Ireland. Journal of Earth Sciences of the Royal Dublin Society, 2, 193–207.
Skelton, P (1992) The fossil record of evolution in species. In Evolution: a Biological and Palaeontological Approach (ed. P. Skelton), The Open University, pp. 445–508.
Skevington, D. (1969) The classification of the Ordovician System in Wales. In The Pre-Cambrian and Lower Palaeozoic rocks of Wales (ed. A. Wood), University of Wales Press, Cardiff, pp. 161–79.
Smellie, J.L. and Stone, P (1992) Geochemical control on the evolutionary history of the Ballantrae Complex, SW Scotland, from comparisons with recent analogues. In Ophiolites and their Modern Oceanic Analogue (eds L.M. Parson, B.J. Murton and P. Browning), Geological Society of London, Special Publication, 60, pp. 171–8.
Smith, J. (1907) On the occurrence of conodonts in the Arenig–Llandeilo formations in the Southern Uplands of Scotland. Transactions of the Natural History Society of Glasgow, 7, 235–52.
Smith, J.D.D. and White, D.E. (1963) Cambrian trilobites from the Purley Shales of Warwickshire. Palaeontology, 6, 397–407.
Smith, N.J.P. and Rushton, A.W.A. (1993) Cambrian and Ordovician stratigraphy related to structure and seismic profiles in the western part of the English Midlands. Geological Magazine, 130, 665–71.
Smith, R.D.A. (1988) A sedimentological analysis of the late Llandovery of the Welsh Basin. Unpublished PhD thesis, University of Cambridge.
Spencer, W.K. (1918) A Monograph of the British Palaeozoic Asterozoa, Part 3. Monograph of the Palaeontographical Society, London, pp. 109–68.
Spjeldnaes, N. (1963) Some silicified Ordovician fossils from South Wales. Palaeontology, 6, 254–63.
Stead, J.T.G. and Williams, B.P.J. (1971) The Cambrian rocks of north Pembrokeshire. In Geological Excursions in South Wales and the Forest of Dean (eds D.A. Bassett and M.G. Bassett), Geological Association, South Wales Group, Cardiff, pp. 180–98.
Stephenson, D., Bevins, R.E., Millward, D., Highton, A.J., Parsons, I., Stone, P. and Wadsworth, W.J. (1999) Caledonian Igneous Rocks, GCR Series, No. 17, Joint Nature Conservation Committee, Peterborough.
Stevenson, I.P. (1971) The Ordovician rocks of the country between Dwygyfylchi and Dolgarrog, Caernarvonshire. Proceedings of the Yorkshire Geological Society, 38, 517–48.
Stone, M. (1957) The Aberfoyle Anticline. Geological Magazine, 94, 265–76.
Stone, P. (1995) The Geology of the Rhins of Galloway District, Memoir of the British Geological Survey, Sheets 1 and 3 (Scotland), The Stationery Office, London.
Stone, P. (1996) Girvan and Ballantrae: an obducted ophiolite. In Geology in Southwest Scotland (eds P Stone and D. McAdam), British Geological Survey, Keyworth, pp. 69–79.
Stone, P. and Rushton, A.W.A. (1983) Graptolite faunas from the Ballantrae ophiolite complex and their structural implications. Scottish Journal of Geology, 19, 297–310.
Stone, P and Smellie, J.L. (1988) Classical Areas of British Geology: The Ballantrae Area, HMSO, London, for the British Geological Survey.
Stone, P, Floyd, J.D., Barnes, R.P. and Lintern, B.C. (1987) A sequential back-arc and foreland basin thrust duplex model for the Southern Uplands of Scotland. Journal of the Geological Society, London, 144, 753–64.
Strachan, I. (1986) The Ordovician graptolites of the Shelve district, Shropshire. Bulletin of the British Museum of Natural History (Geology), 40, 1–58.
Strachan, I. (1996–1997) A Bibliographic Index of British Graptolites (Graptoloidea), Parts 1 and 2. Monograph of the Palaeontographical Society, London, 155 pp.
Strachan, I. and Khashogji, M.S. (1984) The type specimen of Didymograptus murchisoni. Lethaia, 17, 223–31.
Strachan, I., Temple, J. and Williams, A. (1948) The age of the Neptunian Dyke at Hazier Hill. Geological Magazine, 85, 276–8.
Strahan, A., Cantrill, T.C. and Thomas, H.H. (1907) The Geology of the South Wales Coalfield. Part VII. The Country around Ammanford. Memoir of the Geological Survey of England and Wales, HMSO, London, 246 pp.
Strahan, A., Cantrill, T.C., Dixon, E.E.L. and Thomas H.H. (1909) The Geology of the South Wales Coalfield, Part X. The Country around Carmarthen. Memoir of the Geological Survey of Great Britain (England and Wales), HMSO, London, 177 pp.
Strahan, A., Cantrill, T.C., Dixon, E.E.L., Thomas, H.H. and Jones, O.T. (1914) The Geology of the South Wales Coalfield. Part XL The Country around Haverfordwest. Memoir of the Geological Survey of England and Wales, HMSO, London, 262 pp.
Stubblefield, C.J. (1926) Notes on the development of a trilobite, Shumardia pusilla (Sars). Linnean Society's Journal — Zoology, 36, 345–72.
Stubblefield, C.J. (1933) Notes on the fossils. Quarterly Journal of the Geological Society, London, 89, 364–78.
Stubblefield, C.J. (1956) Cambrian palaeogeography in Britain. In El Sistema Cáimbrico, su paleogeografia y el problema de su base, Vol. 1 (ed. J. Rodgers), XX Congreso Geológico Internacional, México, pp. 1–43.
Stubblefield, C.J. and Bulman, O.M.B. (1927) The Shineton Shales of the Wrekin district: with notes on their development in other parts of Shropshire and Herefordshire. Quarterly Journal of the Geological Society, London, 83, 96–146.
Sweeting, G.S. (1927) The petrography of the Malvern Quartzite, Hollybush Sandstone, and May Hill Sandstone, exposed in the Eastnor (Herefordshire) district. Proceedings of the Geologists' Association, 38, 548–60.
Swett, K. (1969) Interpretation of depositional and diagenetic history of the Cambro-Ordovician succession of north-west Scotland. In North Atlantic — Geology and Continental Drift (ed. M. Kay). Memoir of the American Association of Petroleum Geologists, 12, 630–46.
Swett, K. and Smit, D.E. (1972) Paleogeography and depositional environments of the Cambro-Ordovician shallow-marine facies of the North Atlantic. Geological Society of America Bulletin, 83, 3223–48.
Swett, K., Klein, G.D. and Smit, D.E. (1971) A Cambrian tidal sandbody, the Eriboll Sandstone of northwest Scotland. Journal of Geology, 79, 400–15.
Tanner, P.W.G. (1995) New evidence that the Lower Cambrian Leny Limestone at Callander, Perthshire, belongs to the Dalradian Supergroup, and a reassessment of the 'exotic' status of the Highland Border Complex. Geological Magazine, 132, 473–83.
Tanner, P.W.G. and Leslie, A.G. (1994) A pre-D2 age for the 590 Ma Ben Vuirich Granite in the Dalradian of Scotland. Journal of the Geological Society, London, 151, 209–12.
Taylor, K. and Rushton, A.W.A. (1972) The pre-Westphalian geology of the Warwickshire Coalfield. Bulletin of the Geological Survey of Great Britain, 35 [dated 1971].
Taylor, P.D. and Cope, J.C.W. (1987) A trepostome bryozoan from the Lower Arenig of south Wales: implications of the oldest described bryozoan. Geological Magazine, 124, 367–71.
Temple, J.T. (1952) A revision of the trilobite Dalmanitina mucronata (Brongniart) and related species. Lunds Universitets Årsskrift, N.F. Avd. 2, 48, 1–33.
Temple, J.T. (1965) Upper Ordovician brachiopods from Poland and Britain. Acta Palaeontologica Polonica, 10, 379–450.
Temple, J.T. (1968) The Lower Llandovery (Silurian) Brachiopods from Keisley, Westmorland, Monograph of the Palaeontographical Society, London, 58 pp.
Temple, J.T. (1969) Lower Llandovery (Silurian) trilobites from Keisley, Westmorland. Bulletin of the British Museum of Natural History (Geology), 18, 197–230.
Temple, J.T. and Cave, R. (1992) Preliminary report on the geochemistry and mineralogy of the Nod Glas and related sediments (Ordovician) of Wales. Geological Magazine, 129, 589–94.
Thomas, A.T. and Holloway, D.J. (1988). Classification and phylogeny of the trilobite order Lichida. Philosophical Transactions of the Royal Society of London, Series B, 321, 179–262.
Thomas, A.T., Owens, R.M. and Rushton, A.W.A. (1984) Trilobites in British stratigraphy. Geological Society, London, Special Report, 16.
Thomas, G.E. and Thomas, T.M. (1956) The volcanic rocks of the area between Fishguard and Strumble Head, Pembrokeshire. Quarterly Journal of the Geological Society, London, 112, 291–314.
Thomas, H.H. and Cox, A.H. (1924) The volcanic series of Trefgarn, Roch, and Ambleston (Pembrokeshire). Quarterly Journal of the Geological Society, London, 80, 520–48.
Tietzsch-Tyler, D. (1996) Precambrian and early Caledonian orogeny in south-east Ireland. Irish Journal of Earth Sciences, 15, 19–39.
Toghill, P. (1968) The graptolite assemblages and zones of the Birkhill Shales (Lower Silurian) at Dobb's Linn. Palaeontology, 11, 654–68.
Toghill, P (1970a) A fauna from the Hendre Shales (Llandeilo) of the Mydrim area, Carmarthenshire. Proceedings of the Geological Society, 1663, 121–9.
Toghill, P (1970b) Highest Ordovician (Hartfell Shales) graptolite faunas from the Moffat area, South Scotland. Bulletin of the British Museum of Natural History (Geology), 19, 1–26.
Toghill, P (1992) Onny Valley, Shropshire. Geology Teaching Trail. Geologists' Association Guide No. 45, 20 pp.
Toghill, P and Beale, S. (1994) Ercall Quarries. Geologists' Association Guide No. 48, 21 pp.
Torsvik, T.H. (1998) Palaeozoic palaeogeography: a North Atlantic viewpoint. Geologiska Foreningens i Stockholm Forbandlingar, 120, 109–18.
Traynor, J.J. (1988) The Arenig in South Wales: sedimentary and volcanic processes during the initiation of a marginal basin. Geological Journal, 23, 275–92.
Traynor, J.J. (1990) The Arenig sedimentation and basin tectonics in the Harlech Dome and Dolgellau Basin, North Wales. Geological Magazine, 127, 13–30.
Tripp, R.P. (1954) Caradocian trilobites from mudstones at Caighead Quarry, near Girvan, Ayrshire. Transactions of the Royal Society of Edinburgh, 62, 655–89.
Tripp, R.P. (1967) Trilobites from the Upper Stinchar Limestone (Ordovician) of the Girvan District, Ayrshire. Transactions of the Royal Society of Edinburgh, 67, 43–93.
Tripp, R.P. (1976) Trilobites from the basal Superstes Mudstones (Ordovician) at Aldons Quarry, near Girvan, Ayrshire. Transactions of the Royal Society of Edinburgh, 69, 369–424.
Tripp, R.P. (1980a) Trilobites from the Ordovician Balclatchie and lower Ardwell groups of the Girvan district, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 71, 123–45.
Tripp, R.P. (1980b) Trilobites from the Ordovician Ardwell Group of the Craighead Inlier, Girvan district, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 71, 147–57.
Tripp, R.P. (1993) Review of the trilobites from the Middle Ordovician Barr Group, Girvan district, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 84, 87–102.
Tucker, R.D. and McKerrow, W.S. (1995) Early Palaeozoic chronology: a review in the light of new U-Pb zircon ages from Newfoundland and Britain. Canadian Journal of Earth Sciences, 32, 368–79.
Tucker, R.D. and Pharaoh, T.C. (1991) U-Pb zircon ages for late Precambrian igneous rocks in southern Britain. Journal of the Geological Society, London, 148, 435–43.
Tucker, R.D., Krogh, T.E., Ross, R.J. and Williams, S.H. (1990) Time-scale calibration by high-precision U-Pb zircon dating of interstratified volcanic ashes in the Ordovician and Lower Silurian stratotypes of Britain. Earth and Planetary Science Letters, 100, 51–8.
Turner, J.S. (1961) [Report of a Field Meeting to Cautley.1 Proceedings of the Yorkshire Geological Society, 33, 36–7.
Turner, P. (1979) Diagenetic origin of Cambrian marine red beds: Caerfai Bay Shales, Dyfed, Wales. Sedimentary Geology, 24, 269–81.
Turner, R.E. (1982) Reworked acritarchs from the type section of the Ordovician Caradoc Series, Shropshire. Palaeontology, 25, 119–43.
Turner, R.E. (1984) Acritarchs from the type area of the Ordovician Caradoc Series, Shropshire. Palaeontographica Abteilung B, 190, 87–157.
Ulrich, E.O. (1930) Ordovician trilobites of the family Telephidae and concerned stratigraphic correlations. US National Museum Proceedings, 76, 1–101.
Underwood, C.J., Crowley, S.F., Marshall, J.D. and Brenchley, P.J. (1997) High-resolution carbon isotope stratigraphy of the basal Silurian stratotype (Dob's Linn, Scotland) and its global correlation. Journal of the Geological Society, London, 154, 709–18.
Wade, A. (1911) The Llandovery and associated rocks of Northeastern Montgomeryshire. Quarterly Journal of the Geological Society, London, 67, 415–59.
Waltham, A.C. (1971) A note on the structure and succession at Abereiddy Bay, Pembrokeshire. Geological Magazine, 108, 49–52.
Walton, E.K. (1965) Lower Palaeozoic rocks. In The Geology of Scotland (ed. G.Y. Craig), Edinburgh, Oliver and Boyd.
Walton, E.K. and Oliver, G.J.H. (1991) Lower Palaeozoic — stratigraphy. In Geology of Scotland (ed G.Y. Craig), The Geological Society of London, pp. 161–93.
Warren, P.1., Price, D., Nutt, M.J,C. and Smith E.G. (1984) Geology of the Country around Rhyl and Denbigh. Memoir of the British Geological Survey, Sheets 95 and 107 and parts of Sheets 94 and 106, HMSO, London.
Watts, W.W. (1925) The geology of south Shropshire. Proceedings of the Geologists' Association, 36, 321–63.
Webb, B.C. (1983) Early Caledonian structures in the Cambrian Slate Belt, Gwynedd, North Wales. Report of the Institute of Geological Sciences, No.83/1, pp. 1–6.
Webb, B.C. and Cooper, A.H. (1988) Slump folds and gravity slide structures in a Lower Palaeozoic marginal basin sequence (the Skiddaw Group), N.W England. Journal of Structural Geology, 10, 463–72.
Webb, B.C., Rushton, A.W.A. and White, D.E. (1993) Classical Areas of British Geology. Moffatdale and the Upper Ettrick Valley, HMSO, London, for British Geological Survey.
Webby, B.D. (1998) Steps towards a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy, 36, 1–33.
Webby, B.D., Wang Qizheng and Mills, K.J. (1988) Upper Cambrian and basal Ordovician trilobites from western New South Wales. Palaeontology, 31, 905–38.
Wells, A.K. (1925) The geology of the Rhobell Fawr district (Merionethshire). Quarterly Journal of the Geological Society, London, 81, 463–538.
Westergård, A.H. (1909) Studier öfver Dictyograptusskiffern och dess Gränslager, med särskild hansyn till i Skåne förekommande bildningar. Acta Universiatis lundensis N.F., Afd. 2, 5(3), 111–79.
Westergård, A.H. (1936) Paradoxides oelandicus Beds of Öland. Sveriges Geologiska Undersökning, Avhandlingar Ser. C, 394.
Whelan, G.M. (1988) Preliminary acritarch and chitinozoan distributions across the Ordovician–Silurian boundary stratotype at Dob's Linn. Bulletin of the British Museum of Natural History (Geology), 43, 41–4.
White, D.E., Barron, H.F., Barnes, R.P. and Lintern, B.C. (1992) Biostratigraphy of late Llandovery (Telychian) and Wenlock turbiditic sequences in the SW Southern Uplands, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 82 [for 1991], 297–322.
Whittaker, A., Cope, J.C.W., Cowie, J.W. and 9 others (1991) A guide to stratigraphical procedure. Journal of the Geological Society, London, 148, 813–24.
Whittard, W.F. (1931a) The geology of the Ordovician and Valentian rocks of the Shelve country, Shropshire. Proceedings of the Geologists' Association, 42, 322–39.
Whittard, W.F. (1931b) Easter Field meeting (extension) to Minsterley. Proceedings of the Geologists' Association, 42, 339–44.
Whittard, W.F. (1952a) A geology of south Shropshire. Proceedings of the Geologists' Association, 63, 143–97.
Whittard, W.F. (1952b) Cyclopygid trilobites from Girvan and a note on Bohemilla. Bulletin of the British Museum of Natural History (Geology), 1, 305–24.
Whittard, W.F. (1953) Palaeoscolex piscatorum gen. et sp. nov., a worm from the Tremadocian of Shropshire. Quarterly Journal of the Geological Society, London, 109, 125–35.
Whittard, W.F. (1955–1967) The Ordovician Trilobites of the Shelve Inlier, West Shropshire, Parts 1–11. Monograph of the Palaeontographical Society London, 352 pp.
Whittard, W.F. (1960) Lexique Stratigraphique International. Europe: Fascicule 3a, England, Wales & Scotland. Part 3a1V Ordovician, Centre National de la Récherche Scientifique, Paris.
Whittard, W.F. (1979) An account of the Ordovician rocks of the Shelve Inlier in west Salop and parts of north Powys (compiled by W.T. Dean). Bulletin of the British Museum of Natural History (Geology), 33, 1–69.
Whittington, H.B. (1962–1968) A Monograph of the Ordovician Trilobites of the Bala Area, Merionethshire, Parts 1–4. Monograph of the Palaeontographical Society, London, 138 pp.
Whittington, H.B. (1966) Trilobites of the Henllan Ash, Arenig Series, Merioneth. Bulletin of the British Museum of Natural History (Geology), 11, 491–505.
Whittington, H.B. (1992) Trilobites, Boydell, Woodbridge, 145 pp.
Whittington, H.B. and Hughes, C.P. (1974) Geography and faunal provinces in the Tremadoc Epoch. Special Publication of the Society of Economic Palaeontologists and Mineralogists, 21, 203–18.
Whittington, H.B. and Williams, A. (1955) The fauna of the Derfel Limestone of the Arenig district, north Wales. Philosophical Transactions of the Royal Society, B, 238, 397–430.
Whittington, H.B., Dean, W.T., Fortey, R.A., Rickards, R.B., Rushton, A.W.A. and Wright, A.D. (1984) Definition of the Tremadoc Series and the series of the Ordovician System in Britain. Geological Magazine, 121, 17–33.
Whittington, H.B., Chatterton, B.D.E., Speyer, S.E. and 14 others (1997) Trilobita. Introduction, Order Agnostina, Order Redlichiida. Treatise on Invertebrate Paleontology, Part O, revised, University of Kansas and Geological Society of America, 530 pp.
Whitworth, P.A. (1970) A revision of the British Tremadoc trilobites, with notes on stratigraphy and correlation. Unpublished PhD thesis, University of Birmingham.
Whitworth, P.H. (1969) The Tremadoc trilobite Pseudokainella impar (Salter). Palaeontology, 12, 406–13.
Wilcox, C.J. and Lockley, M.G. (1981) A reassessment of facies and faunas in the type Llandeilo (Ordovician), Wales. Palaeogeography, Palaeoclimatology, Palaeoecology, 34, 285–314.
Williams, A. (1948) The Lower Ordovician cryptolithids of the Llandeilo district. Geological Magazine, 85, 65–88.
Williams, A. (1949) New Lower Ordovician brachiopods from the Llandeilo–Llangadock district. Parts I, II. Geological Magazine, 86, 161–74, 226–38.
Williams, A. (1953) The geology of the Llandeilo district, Carmarthenshire. Quarterly Journal of the Geological Society, London, 108, 177–208.
Williams, A. (1959) A structural history of the Girvan district S.W. Ayrshire. Transactions of the Royal Society of Edinburgh, 63, 629–67.
Williams, A. (1962) The Barr and Lower Ardmillan Series (Caradoc) of the Girvan district, southwest Ayrshire, with descriptions of the Brachiopoda. Memoir of the Geological Society, London, 3, 1–267.
Williams, A. (1963) The Caradocian brachiopod faunas of the Bala district, Merionethshire. Bulletin of the British Museum Natural History (Geology), 8, 329–471.
Williams, A. (1973) Distribution of brachiopod assemblages in relation to Ordovician palaeogeography. In Organisms and Continents through Time (ed. N.F. Hughes), Special Papers in Palaeontology, 12, 241–69.
Williams, A. (1974) Ordovician Brachiopoda from the Shelve district, Shropshire. Bulletin of the British Museum of Natural History (Geology), Supplement 11, 1–163.
Williams, A., Lockley, M.G. and Hurst, J.M. (1981) Benthic palaeocommunities represented in the Ffairfâch Group and coeval Ordovician successions of Wales. Palaeontology, 24, 661–94.
Williams, A., Strachan, I., Bassett, D.A. et al. (1972) A correlation of the Ordovician rocks in the British Isles. Special Report of the Geological Society, London, 3, 1–74.
Williams, B.P.J. and Stead, J.T.G. (1982) The Cambrian rocks of the Newgale–St David's area. In Geological excursions in Dyfed, South-west Wales (ed. M.G. Bassett), National Museum of Wales, Cardiff, pp. 27–49.
Williams, D. (1930) The geology of the country between Nant Peris and Nant Ffrancon (Snowdonia). Quarterly Journal of the Geological Society, London, 86, 191–233.
Williams, G.D. and Spray, J.G. (1979) Non-cylindrical, flexural slip folding in the Ardwell Flags: a statistical approach. Tectonophysics, 58, 269–77.
Williams, H. (1927) The geology of Snowdon (North Wales). Quarterly Journal of the Geological Society, London, 83, 346–431.
Williams, M. and Siveter, D.J. (1998) British Cambrian and Tremadoc Bradoriid and Phosphatocopid Arthropods, Monograph of the Palaeontographical Society, London.
Williams, S.H. (1982a) Upper Ordovician graptolites from the top Lower Hartfell Shale Formation (D. clingani and P linearis zones) near Moffat, southern Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 72, 229–55.
Williams, S.H. (1982b) The late Ordovician graptolite fauna of the Anceps Bands at Dob's Linn, southern Scotland. Geologica et Palaeontologica, 16, 29–56.
Williams, S.H. (1983) The Ordovician–Silurian boundary graptolite fauna of Dob's Linn, southern Scotland. Palaeontology, 26, 605–39.
Williams, S.H. (1987) Upper Ordovician graptolites from the D. complanatus Zone of the Moffat and Girvan districts and their significance for correlation. Scottish Journal of Geology, 23, 65–92.
Williams, S.H. (1988) Dob's. Linn — the Ordovician–Silurian boundary stratotype. Bulletin of the British Museum of Natural History (Geology), 43, 17–30.
Williams, S.H. (1994) Revision and definition of the C. wilsoni graptolite Zone (middle Ordovician) of southern Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, 85, 143–57.
Williams, S.H. and Ingham, J.K. (1989) The Ordovician–Silurian boundary stratotype at Dob's Linn, southern Scotland. In A Global Standard for the Silurian System (eds C.H. Holland and M.G. Bassett), National Museum of Wales, Geological Series No. 9, pp. 27–35.
Williams, S.H. and Lawson, J.D. (1992) Excursion 32. Dob's Linn. In Geological Excursions around Glasgow and Girvan (eds J.D. Lawson and D.S. Weedon), Geological Society of Glasgow, Glasgow, pp. 440–62.
Williams, S.H. and Lockley, M.G. (1983) Ordovician inarticulate brachiopods from graptolitic shales at Dob's Linn, Scotland; their morphology and significance. Journal of Paleontology, 57, 391–400.
Wilson, J.T. (1966) Did the Atlantic close and then re-open? Nature, 211, 676–81.
Winchester, J.A. and Max, M.D. (1989) Discussion on the provenance of granite boulders in conglomerates of the Northern and Central Belts of the Southern Uplands of Scotland. Journal of the Geological Society, London, 146, 358–60.
Wood, D.S. (1969) The base and correlation of the Cambrian rocks of North Wales. In The Precambrian and Lower Palaeozoic rocks of Wales (ed. A. Wood), University of Wales Press, Cardiff, pp. 47–66.
Wood, D.S. and Harper, J.C. (1962) Notes on a temporary section in the Ordovician at Conway, North Wales. Geological Journal, 3, 177–85.
Woodcock, N.H. (1984) The Pontesford Lineament, Welsh Borderland. Journal of the Geological Society, London, 141, 1001–14.
Woodcock, N.H. (1990) Sequence stratigraphy of the Palaeozoic Welsh Basin. Journal of the Geological Society, London, 147, 537–47.
Woodland, A.W. (1938) Petrological studies in the Harlech Grit Series of Merionethshire. Geological Magazine, 75, 366–82, 440–54.
Woodland, A.W. (1939) The petrography and petrology of the Lower Cambrian manganese ore of West Merionethshire. Quarterly Journal of the Geological Society London, 95, 1–35.
Worssam, B.C., Ellison, R.A. and Moorlock, B.S.P. (1989) Geology of the Country around Tewkesbury. Memoir of the British Geological Survey, Sheet 216 (England and Wales), HMSO, London.
Wright, A.D. (1968) A westward extension of the Upper Ashgillian Hirnantia fauna. Lethaia, 1, 352–67.
Wright, A.D. (1985) The Ordovician–Silurian boundary at Keisley, northern England. Geological Magazine, 122, 261–73.
Wright, A.D. (1988) The Ordovician–Silurian boundary at Keisley, Cumbria. In A Global Analysis of the Ordovician–Silurian Boundary (eds L.R.M. Cocks and R.B. Rickards), Bulletin of the British Museum of Natural History (Geology), 43, 59–63.
Wright, A.E., Fairchild, I.J., Moseley, F. and Downie, C. (1993) The Lower Cambrian Wrekin Quartzite and the age of its unconformity on the Ercall Granophyre. Geological Magazine, 130, 257–64.
Wright, D.T. and Knight, I. (1995) A revised chronostratigraphy for the lower Durness Group. Scottish Journal of Geology, 31, 11–22.
Yochelson, E. (1964) Modestospira: a new Ordovician gastropod. Journal of Paleontology, 38, 891–8.
Yochelson, E. (1993) The question of Primordial and Cambrian/Taconic: Barrande and Logan/Marcou. Earth Science History, 12, 111–20.
Yochelson, E. (1997) The decline in the use of 'Lower Silurian' and the rise of 'Ordovician' in US geologic literature. Earth Science History, 16, 4–12.
Young, T.P., Gibbons, W and McCarroll, D. (in press) Geology of the Country around Pwllheli. Memoir of the British Geological Survey, Sheet 134 (England and Wales), The Stationery Office, London.
Young, T.P., Martin, F., Dean, W.T. and Rushton, A.W.A. (1994) Cambrian stratigraphy of St Tudwal's Peninsula, Gwynedd, northwest Wales. Geological Magazine, 131, 335–60.
Zalasiewicz, J.A. (1984a) Dichograptid synrhabdosomes from the Arenig of Britain. Palaeontology, 27, 425–9.
Zalasiewicz, J.A. (1984b) A re-examination of the type Arenig Series. Geological Journal, 19, 105–24.
Zalasiewicz, J.A. (1986) Graptolites from the type Arenig Series. Geological Magazine, 123, 537–44.
Zalasiewicz, J. (1992) Graptolite dating of Ordovician vulcanicity in the Arenig area, North Wales. Geological Journal, 27, 379–89.
Zalasiewicz, J., Rushton, A.W.A. and Owen, A.W. (1995) Late Caradoc graptolitic faunal gradients across the Iapetus Ocean. Geological Magazine, 132, 611–7.