1916] 



Merriam-S took— Moody : A n 



American Pliocene Bear 



103 



outer end, and the inner end is not as thick as in Arctotherimn. The 

 peroneal groove is much deeper than in either Arctotherium or Ursus, 

 indicating a well developed peroneal muscle. 



Two phalanges of the proximal series were recovered. One of 

 the specimens (figs. 19a and 196) is much longer than the other. They 

 are both much larger than the first phalanges in Ursus and Arcto- 



22b 



Fiys. 22a and 22b. Atlas associated with type specimen of Indarctosf ? ) 

 oregonensis. No. 22362?, X %. Fig. 22«, dorsal view; fig'. 22b, posterior view. 

 Rattlesnake formation, John Day Valley, Oregon. 



thcriwm simwm under observation. Both are noticeably compressed 

 dorso-ventrally, as is the bears. The distal end is flexed downward, 

 giving a distinct longitudinal arch to the dorsal surface. The proximal 

 extremity is relatively broad and its ventral border is deeply notched. 



An atlas (figs. 22a and 226) found associated with rib fragments 

 near the locality of no. 22362 represents a very large carnivore with 



