Douglass : Vertebrates ['rom Montana Tkrtiary 



VX 



with cingula around j^osterior cross-crest. Small, inner, median, in- 

 termediate tubercles on P^ and ^-. Mandible long and slender. 



The teeth are much like those o( J. malocorliimis, but the nasals are 

 different. On the top near the extremities' are convex rugosities in- 

 dicating the presence of horns. 



Measurements. 



Mm. 



Length of nasal processes lyg 



Length of upper molar premolar series 268 



Length of lower molar premolar series 250 



Length of mandible to anterior of Pj 440 



Depth of mandible under Mj 108 



Depth of mandible under P^ 84 



ARTIODACTYLA. 

 Pal^omeryx? borealis? 



No. 806. 



A portion of the middle upper portion 

 of a skull with the bones broken off at 

 the bases agrees in ever particular shown 

 with PalcEomeryx ? borealis from the 

 Flint Creek beds, and it undoubtedly 

 belongs to the same genus if not the 

 same species. 



Merycodus? necatus? Leidy. 

 No. 857. Fig. 2>(^. 

 Part of an antler from the Madison 

 valley is much like the one figured in 

 Leidy' s Extinct Mammalian Fauna as 

 Cervus 7aarreni. It is longer and the 

 burr is higher above the base. 



Fig. 36. Merycodus ? neca- 

 tus ? (No. S57). Portion of 

 antler. LoupFork. Lower Madi- 

 son Valley. \ natural size. 



Merycodus ? 

 No. 804. Fig. 37. 

 This is quite different from the pre- 

 ceding. It is much larger and propor- 

 tionally higher. The burr is very large 



