206 



THE WORLD OF LIFE 



CHAP. 



or shallow seas, were preyed upon by the numerous 

 crocodiles which lived throughout the same periods and 



Fig 58. — Skull of Sauropodous Dinosaur {Diplodocus). 

 From the Upper Jurassic of Colorado, U.S.A. One-sixth nat. size. 



(B.M. Guide.) 



are everywhere found in the same strata. They were of 

 varied forms and sizes, but as they did not differ much 



Fig. 59. — Skull of a Theropodous Dinosaur {Ceratosaurus nasicornis). 

 From the Upper Jurassic of Colorado, U.S.A. One-sixth nat. size. 



(B.M. Guide.) 



