THE BRITISH REPTILES. 125 



SAUROPTERYGIA. 



PLESIOSA URID&. 



Pliosaurus brachydeirus (Kimeridge Clay). 



Pliosaurus brachyspondylus (Kimeridge Clay). 



Pliosaurus evansi (Oxford Clay). 



Pliosaurus ferox (Oxford Clay). 



Pliosaurus gamma (Oxford Clay). 



Pliosaurus grossouvrei (Coral Rag). 



Pliosaurus macromerus (Kimeridge Clay). 



Pliosaurus nitidus (Kimeridge Clay). 



Pliosaurus simplex (Kimeridge Clay). 



Peloneustes aequalis (Kimeridge Clay). 



Peloneustes philarchus (Oxford Clay). 



Thaumatosaurus arcuatus (Lower Lias). 



Thaurnatosaurus carinatus (Kimeridge Clay)- 



Thaumatosaurus cramptoni (Upper Lias). 



Thaumatosaurus megacephalus (Lower Lias). 



Thaumatcsaurus propinquus (Middle Lias). 



Thaumatosaurus zetlandicus (Upper Lias). 



Polyptychodon continuus (Cretaceous). 



Polyptychodon interruptus (Cretaceous). 



Cimoliosaurus bernardi (Cretaceous). 



Cimoliosaurus brachistospondylus (Kimeridge Clay). 



Cimoliosaurus brevior (Cornbrash and Kimeridge 

 Clay). 



Cimoliosaurus cantabrigiensis (Cretaceous). 



Cimoliosaurus constrictus (Cretaceous). 



Cimoliosaurus durobrivensis (Oxford Clay). 



Cimoliosaurus erraticus (Stonesfield Slate). 



Cimoliosaurus eurymerus (Oxford Clay). 



Cimoliosaurus latispinus (Lower Greensand). 



Cimoliosaurus limnophilus (Wealden). 



Cimoliosaurus oxoniensis (Oxford Clay). 



Cimoliosaurus planus (Cambridge Greensand). 



Cimoliosaurus plicatus (Oxford Clay and Portlan 

 dian). 



Cimoliosaurus portlandicus (Portlandian). 



Cimoliosaurus richardsoni (Oxford Clay). 



Cimoliosaurus smithi (Cretaceous). 



Cimoliosaurus trochanterius (Oxford Clay and Kime- 

 ridge Clay). 



Eretmosaurus macropterus (Upper Lias). 



Eretmosaurus rugosus (Lower Lias). 



Plesiosaurus bitractensis (Rhaetic). 



Plesiosaurus compressus (Lias). 



Plesiosaurus conybearei (Lower Lias). 



Plesiosaurus cgstatus (Rhaetic). 



Plesiosaurus depressicostatus (Lias ? ). 



Plesiosaurus eleutheraxon (Lower Lias). 



Plesiosaurus ellipsospondylus (Cambridge Green- 

 sand.) 



