14 VERTEBKATA. 



No. 19. [lOG] Palaeotherium crassum, Cuvier. 



Head (cast). The 

 discovery of Pakeo- 

 therium — one of the 

 most characteristic 

 mammalsof the Ter- 

 tiary Age — formed 

 an epoch in the his- 

 tory of fossils, being 

 one of those famous 

 hoofed quadrupeds 

 restored by Cuvier 

 from their fossil re- 

 mains in the quarries 

 near Paris. The 

 creature resembled 

 the Tapir in the 

 shape of the head and the possession of a short proboscis; but it had only 

 three toes on the forefoot, and the molars resembled in form those of the 

 Rhinoceros. The canines were longer than the other teeth, and there were 

 consequently vacancies in the series for the lodgment of the crowns of the 

 canines when the mouth was shut. The three species are confined to the mid- 

 dle and upper Eocene and Oligocene of Europe. The fossil head, now in the 

 Garden of Plants, was discovered in the Eocene Gypsum of Montmartre, 

 Paris. Size, 13 x 10. 



No. 20. [Ill] Palaeotherium crassum, Cuv. 



Left Hind Foot (cast). The Palteotlierium had three 

 toes before and behind, each terminated hy a hoof, the 

 middle one being the largest. This species had short, 

 thick feet, and may have stood about thirty inches in 

 height. It had the limbs of the modern Tapir, with one 

 toe less on the fore-foot. This specimen is from the same 

 locality and museum as the preceding. Size, 13 x 5. 



FAMILY RHINOCEROTID-ffi. 



This family lias many representatives and a long line of ancestry 

 in the Tertiary. Amynodon from the upper Eocene of America is 

 the earliest member of the family, of which there seem to have 



