PLATE 30. 



SKULL AND TEETH OF THE TYPE OF PLIOHIPPUS LEIDYANUS OSBORN. 



Continued from Plate 29. 



Teeth natural size. Skull one-half natural size. 



Snake Creek, Sioux Co., Nebr. Lower Pliocene 1. Pliohippus leidyanus Osborn, Am. Mus. 17224. Superior and 



inferior grinding teeth of the type; a, crown views of upper 

 dentition, c, crown view of lower dentition; d, external view of 

 p 4 ; b, external view of p 4 , b l , anterior view, b 2 , section of the 

 middle portion of the crown, b 3 , section of lower portion of the 

 crown. 



2. Pliohippus leidyanus Osborn, Amer. Mus. 17224, skull and jaws 

 of the type (partly reconstructed in drawing). 



282 



