214 



THE CHAIN OF LIFE. 



the Ruminants like the Deer, Ox and Camel, are examples 



(Selenodonts). 



The most characteristic animals of the lowest Eocene belong 

 to the genus Coryphodon (Fig. 171, 172), which so abounded m 



Fir 171 -Corypiwdon Hamatus. A Lower Eocene Perissodactyl skull, greatly reduced. 

 Fig. 171- K^orypnoa ^^^jj ^.^^ ^f train, a.- After Marsh. 



Eocene America that bones of about 150 individuals were 

 found by the Wheeler Expedition in one year in the Eocene 

 beds of New Mexico. These animals in their dentition 

 approached the American tapirs, except that they had great 



