356 



HISTORICAL GEOLOGY. 



The Dinosaurs 

 were also abun- 

 dant, and of great 

 size. The re- 

 stored skeleton of 

 a European spe- 

 cies (Fig. 31 9) will 

 give some idea of 

 their general ap- 

 pearance and size. 



The Ptero- 

 saurs, or winged 

 saurians, of 

 America, were of 

 enormous size in 

 the Cretaceous., 

 some attaining 

 an alar extent of 

 twenty-five feet ; 

 but a striking pe- 

 culiarity of them 

 was the entire ab- 

 sence of teeth. 

 On this account 

 they have been 

 put into a distinct 

 family, Pterano- 

 donta (toothless, 

 winged). The 

 Pteranodon in- 

 gens had tooth- 

 less jaws, four 

 feet long, and 

 wings twenty- two 

 feet from tip to 

 tip (Fig. 320). 



