List of Casts, Models, and Photographs. 



12. Polymastodon taoensis Cope. 

 Lower Jaws. 



Am. Mus. No. 96S. 



A pair of complete rami of the lower jaw. The Multitul)er- 



culates, a characteristic group of Mesozoic time, reached their 



culmination in the Puerco or lower horizon of the Basal 



Eocene, in this species, about the size of a Beaver. The true 



position of this group of pseudo-rodents is uncertain; they 



are generally considered, though on very insufficient evidence, 



to be related to the modern Monotremata. 



Price, $6. 



OsBORN & Earle, Bull. Am. Mus. Nat. Hist., 1895, p. 13, fig. \c. 



13. Polymastodon attenuatus Cope. 

 Upper Teeth. 



Am. Mus. No. 970. 



The incisors of one side and premolars and molars of both 



sides, set in plaster. 



^ Price, Sj- 



OsBORN & Earle, Bull. Am. Mus. Nat. Hist., 1895, p. 13, C'S- i''- 



14. Palgeonictis occidentalis Osborn & Wort man 

 Lower Jaws and Front of Skull. 



Am. Mus. No. 110. Type specimen. 

 From the Suessonian (Wasatch) of Wyoming. 



This rare and fine specimen, found by Wortman in 1S91, 

 supplies another proof of the homotaxy of the Wasatch with 

 the Suessonian of Europe, where the genus is represented by 

 the less perfect specimens preserved in the Pans Museum. 



Price, $12. 



Osborn & Wortman, Bull. Am. Mus. Nat. Hist., .80.. p. 104. pl. w. 



