Tlie Reign of Reptiles 



as size goes no more disproportionate than 

 Diplodocus. In none of these animals were the 

 jaws very formidable, while in the oft-mentioned 

 Diplodocus the teeth were so absurdly small 

 for the apparent needs of the creature that it 

 might be supposed he spent the greater part of 

 the time in eating. But the vegetation of the 



Skull of Diplodocus. 



time was luxuriant, for the climate was warm 

 and ferns were then growing in Greenland, 

 while lakes and marshes were scattered abun- 

 dantly throughout our Western country. So 

 taking all things into consideration — the struc- 

 ture of the animals and their surroundings — it 

 is generally thought that these big reptiles 

 haunted the streams and lakes, passing the 



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