EXTINCT ANIMALS 



Mesozoic strata in the United States is astonish- 

 ing ; no less remarkable is the skill and success 

 with which American naturahsts — chief among 

 whom have been Professor Marsh of Yale and 

 Professor Cope of Philadelphia — have collected, 



Fig. 148. — Probable appearance of the Ceteosaurus (and of the 

 closely similar Diplodochus and Brontosaurus) in life. It 

 has been suggested that the animal walked along the sea 

 or river bottom keeping its head jast above water. Speci- 

 mens of over sixty feet in length have been found. 



fitted together and drawn every detail of more 

 than thirty different kinds of these monsters. 

 They have given such full evidence of the 

 structure and build of the animals that we may 

 with confidence accept the reconstructions of 

 the appearance of the animals such as those 



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