U. S. GEOLOGICAL SURVEY 



MONOGRAPH 65 PLATE LXXX 



SKULLS OF RHADINORHINUS AND METARHINUS 



<After E. S. Riggs; see pp. 426, 430.) One-fourth natural size. A 

 beds'* (level Uinta upper B 1), Uinta Basin, top view; A^, the 

 Metarhinus beds," Uinta Basin, basal view 



, Rhadinorhinus abhotti, type (Field Mus. 12179), "Upper Metarhinus 

 iame, basal view. B, M. earlei, referred (Field Mus. 12187), "Upper 



