PLATE VIL 



pec... 



Fia. 5. 



Fig. 7. 



acQ 



-ax 



Fig. 9. 



acc 



Fig. 2. 



Fig. 4. 



ktti' ai pi 



pi Pe ji 



Fig. 6. 



ai aV P} 



Fig. 8. 



ae y 



—-h 



ye 



Fig. 10. 



Fig. 1, Mioclaenus corrxigatus^ superior molars. Fisf. 2, Pantolambda hathmodon^ 

 superior true molars. Fig. 3, Phenacodus primcevus, superior molar. Fig. 4, do. inferior 

 molar. Fig. 5, Lambdotherium popoagicum^ superior molar. Fig. 6, do. inferior molar. 

 Fig. 7, AncMtherium anrelianense, superior molar. Fig. 8, Hippotlieriu'm gracile^ infe- 

 rior molar. Fig. 9, superior molar young crown of a Hippotherium. Fig. 10, superior 

 molar of Equus. Figs. 1, 2, 5, 6, from Cope ; 3, 4, from Wortman ; the others from 

 '"audry. 



G: 



