Fig. 120. (Upper) Pliohippus pernix Marsh, Yale Mus. 13007, skull of the type as reconstructed by R. S. Lull. 

 Partly reversed in drawing. (Middle) Superior molar teeth of the type, p 2 -m 3 of the left side. (Lower) Anterior and ex- 

 ternal view of an isolated molar tooth. Skull one-half natural size, teeth natural size. Middle and lower drawings by 

 S. Oka. 



152 



