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 Benton, M.J. & Spencer, P.S. 1995. Fossil Reptiles of Great Britain. Geological Conservation Review Series No. 10, JNCC, Peterborough, ISBN 0 412 62040 5.

Mid Jurassic (Bathonian) of Southern England

The remains of dinosaurs, crocodilians, pterosaurs, plesiosaurs and turtles are known from a large number of localities in the Bathonian of Gloucestershire and Oxfordshire (Figure 6.1). Many of these are important from an historical point of view as well as being productive sources of reptiles. The majority of the remains come from rocks that are interpreted as subaerial lagoonal and lacustrine deposits, and these document a number of major faunal changes. Most notable was the disappearance of the tritylodontids, the last surviving members of the essentially Permo-Triassic mammal-like reptiles. A number of new groups appeared, including the choristoderes, the avialan dinosaurs, and possibly the lizards (see (Figure 6.5)). These British records are international 'firsts' and 'lasts' (more detail in the introduction to Chapter 4).

The GCR sites, New Park Quarry [SP 171 296], Stonesfield [SP 387 171], Huntsman's Quarry [SP 126 253], Shipton-on-Cherwell [SP 475 178] and Kirtlington [SP 494 199], provide a coverage of faunas which range in age from the Early to the Late Bathonian.

References

(Figure 6.1) Distribution of British Bathonian tetrapod localities. Dorset: Long Burton (1), Watton Cliff (1a), Swyre (1b); Somerset: Closworth (2); Avon: Bath (3); Wiltshire: Avoncliff (4), Bradford-on-Avon (5), Frankley (6), Box Tunnel (7), Atford (8), Malmesbury (9), Leigh Delamere (9a); Gloucestershire: Minchinhampton (10), Sapperton Tunnel (11), Avening (12), Cirencester (13), Tarlton Clay Pit (13a), Sevenhampton (14), Chedworth (15), Stanton (16), Bibury (17), Naunton (18), Kyneton Thorns (19), Huntsman's Quarry (20), Eyeford (21), New Park Quarry (22), Oakham (23), Longborough Road Quarry (24); Oxfordshire: Chipping Norton (25), Sarsden (26), Over Norton (27), Sharp's Hill (28), Temple Mills Quarry (29), Enstone (30), Stonesfield (31), Slape Hill (32), Glympton (33), Bladon (34), Hanborough (35), Enslow Bridge (36), Bletchingdon Station (37), Shipton Quarry (38), Kirtlington (39), Hampton Common (40), Fritwell (41), Littlemore (42), Woodeaton (43), Ardley (44), Stratton Audley (45); Buckinghamshire: Stony Stratford (46), Olney (47); Northamptonshire: Blisworth (48), Cogenhoe (49), Northampton (50), Kingsthorpe (51), Rushden (52), Thrapston (53), Ilchester (54), Oundle (55); Leicestershire: Essendine (56), Belmesthorpe (57); Cambridgeshire: Peterborough (58), Botolph's Bridge (59), Orton Longueville, Peterborough (60), Stilton (61); Yorkshire: Scarborough (62); Hebrides: Eigg (63), Muck (64), Elgol, Skye (65a, b), Bearreraig, Skye (66). Based on information in Evans and Milner (1994), Metcalf et al. (1992), and original.

(Figure 6.5) Scene in Early Bathonian times, showing a small lake in Gloucestershire surrounded by seed ferns and conifers. Fishes (Lepidotus) live in the water, and frogs (Eodiscoglossus) disport themselves around the sides. Dinosaurs include some of the earliest stegosaurs and maniraptorans (?), plated and small carnivorous dinosaurs respectively. A carcass of the large sauropod, Cetiosaurus, is rotting in the water, and Megalosaurus scavenges. Lizard-like animals, crocodiles, pterosaurs, mammals and tritylodont mammal-like reptiles complete the scene. Based on a restoration painting by Pam Baldaro, showing the scene at Hornsleasow Quarry, Gloucestershire. Reproduced with permission of the University of Bristol.