MESOZOIC TIME — TRIASSIC AND JURASSIC. 



787 



The Omosaurus armatus of Owen (1875) was Stegosaurian, and perhaps, 

 as Marsh suggests, a species of the genus Stegosaurus ; and he observes that 

 the Scelidosaurus of Owen is an allied form. 



Crocodilians, Lacertians, Chelonians. — The Crocodilians were represented 

 by Teleosaurs, species having the size and slender head of the Gavial of the 

 Ganges, but with biconcave vertebrae. Two species occur in the Upper 



1328-1825. 



1325 



Pteeosaitb, — Fig. 1323, Ehamphorhynclius phyllurus (x J) ; 1324, caudal oar(x J) ; 1325, restoration (x j). All 



from Marsh. 



Lias of England, and five others in the Lower and Upper Oolyte. Fossil 

 eggs from Cirencester are suspected to be Teleosaurian (Buckman). The 

 Mystriosaur (Fig. 1320) is a related species from the Lias of Europe. 



A species of Lizard, referred to the genus Lacerta, occurs in the Lower 

 Oolyte of England. Tortoises (Chelonians) are found in the Oolyte ; and a 

 terrestrial species, Testudo StricTdandi Phillips, in the Stonesfield slate. 



