MAMMALIA. 



45 



Fig. 35. — Outline of upper view of skull (A) to show size of brain, with 

 fore (B) and hind (0) feet, of an Amblypod (Coryphodon hamatus), 

 from the Lower Eocene of Wyoming, U.S.A. ; A one-fifth, the others 

 one-third nat. size. (After 0. 0. Marsh.) 



Pia. 1 36. — Left upper (A) and lower (B) grinding teeth of Coryphodon 

 hamatus, from the Lower Eocene of Wyoming, U.S.A. ; one-half nat. 

 size. (After 0. C. Marsh.) 



