80 



THE WHITE RIVER BADLANDS 



chief difference between the Tertiary and the living forms 

 lie in the higher specialization of the latter, particularly as 

 regards foot structure and brain character. 



The Canidae seem almost certainly to have descended 

 directly from the early Eocene Creodonta, but so undoubt- 

 edly did the Felidae. During the Oligocene time the two 

 families were much generalized and had many characters in 



Figure 24 — Skull of Daphoenodon superbus. Peterson, 1906. 



