IT. S. GEOLOGICAL SURVEY 



MONOGRAPH 55 PLATE LXXVII 



SKULLS OF DOLICHORHINUS, PALATAL VIEW 



One-fourth natural size. A, Dolichorhinus superior^ type (Field Mus. 12188; after 

 sandAone, Uinta B" (level Uinta B 2 of this monograph) (after E. S. Riggs). 

 palatal view (after Douglass) 



S. Riggs). B, D. fluminalis, type (Field Mus. 12205), "Amynodon 

 3, D. longiceps, type (Carnegie Mus. 2347), low in level Uinta B, 



