1921] Frick: Faunas of Baidista Creek and San- Timoteo Canon 311 



Equus type. It may represent a later stage in equine development 

 than does Equus occidentalis of Raneho La Brea. A considerable 

 advance is indicated over the more specialized of such late Plioliippus 

 forms as P. pro vers us IMerriam of the Upper Etchegoin and P. sim- 

 plicidens (Cope) of the Blanco. The dentition is considerably more 

 primitive in character than that of Equus namadicus of the Indian 

 and E. complicatus and E. fraternus of the American Pleistocene. The 

 teeth apparently approach the stage represented by E. niobarensis 

 of Nebraska and perhaps by E. scotti of Texas, and the Asiatic E. 

 sivale nsis. 



TAPIRUS 



Tapir remains have been met with but twice on the Pacific Coast, 

 the known material consisting of a single lower molar from the 

 Aiiriferous Gravels of California, referred to Tapirus haysii ca.lifor- 

 nicus Merriam," and three associated upper molars from Cape Blanco, 

 Oregon. Therefore one of the most interesting items in the present 

 collection is the fragment of a lower jaw containing two tapiroid teeth 

 excavated by the writer in the black clays of Bautista. 



TAPIRUS MEREIAMI, ii. sp. 



Type. — Two lower cheek teeth, contained in a section from the right side of a 

 jaw, Univ. Calif. Coll. Vert. Pal. no. 23-519 (figs. 26-28), Univ. Calif, loc. 3243. 

 The anterior main crests of both teeth were found separated from the posterior 

 •crests, as shown in figure 26. 



Characters. — The considerable difference in the transverse diam- 

 eters of the two main crests as seen in both teeth of tliis specimen; the 

 slightly greater size of the specimen as compared with the large 

 Tapirus liaysii Leidy from the Port Kennedy Cave, and the miich 

 greater size as compared with the small Tapirus liaysii calif or nicus 

 Merriam from the Atxriferous Gravels. 



Description. — The two teeth are of similar pattern, and are of the 

 characteristic form of molar teeth of this genus. The usual strong 

 transverse ridges connecting the anterior and the posterior pairs of 



17 Merriam, J. C. Tapir Remains from late Cenozoie Beds of the Pacific Coast 

 Region. Univ. Calif. Publ., Bull. Dept. Geol., vol. 7, pp. 169-175, 1913. 



