List of Casts, Models, and Photographs. ' 29 



and It was not until 1896 that the Museum Expeditions 

 enabled us to mount the complete skeleton. The animal ex- 

 hibits a curious mixture of primitive and specialized charac- 

 ters, the former being dominant in the limbs and body, the 

 latter appearing in the skull and feet. The flat-topped skull 

 with slight rudiments of frontal and parietal horns, the spread- 

 ing, hippopotamus-like front teeth, the short elephantine feet 

 and broad pelvis, are the most noticeable specialized charac- 

 ters. Coryphodon was nearly related although not directly 

 ancestral to the Uintatheres (Dinoceras) of the Middle Eocene 

 or Bridger Beds. 



The skeleton as mounted is composed of a number of in- 

 dividuals of the same species, size and age, collected by the 

 Museum Expedition of 1896. 



OsBORN, Coryphodon radians Cope, A Complete Skeleton of Corypho- 

 don, Bull. Am. Mus. Nat. Hist., X, 1898, p. 81. 



Coryphodon testis Osborn, Evolution of the Amblypoda, ibid., pp. 

 189-204. 



See also Marsh, Am. Jour. Sci., 1893, p. 321. 



10. Teleoceras (Aphelops) fossiger (Cope). 



Am. Mus. No. 2604. 



This Rhinoceros was the most abundant large animal of the 

 Upper Miocene of Western America. Its bones are found in 

 some localities (such as the famous quarry at Long Island, 

 Phillips Co., Kansas) in great numbers and remarkably well 

 preserved, but the individuals are not distinguishable. This 

 skeleton, made up of many individuals of appropriate size, is 

 mounted with concealed steel rods traversing the bones and 

 only two visible main supports. The male probably bore a 

 small horn, which was rudimentary or absent in the female. 

 The animal had much shorter legs and a heavier body than 

 any modern Rhinoceros, the principal measurements being: 

 height at shoulder, 4 ft. (M. 1.22); at pelvis, 3 ft. 8 in. (M. 1.12); 

 total length, 10 ft. 3 in. (M. 3.12); greatest girth or chest 

 circumference, 9 ft. 2 in. Its size was about that of the 

 largest Hving species, except in the height. The neck was 



