PLATE X 



Described 

 on Page 



Fig. 1. Pr ornery cochosrus carrikeri Peterson. Superior view of 

 mandibular rami. PLT. Cat. No. 1 09 CM. 1/3 nat. 

 size. 106 



Fig. 2. Promerycochosrus hollandi Douglass. Superior view of 



skull. HT. Cat. No. 11 94 CM. 1/3 nat. size. 124 



Fig. 3. Mesoreodon megalodon Peterson. Superior view of man- 

 dibular rami. PT. Cat. No. 1323 CM. 1/2 nat. size. 102 



Fig. 4. Mesoreodon megalodon Peterson. Anterior part of man- 

 dibular rami. HT. Cat. No. 1325 CM. 1/2 nat. size. 102 



Fig. 5. Same as Fig. 4. Palate. 



(Photographs from the Carnegie Museum) 



330 



