AJSBLYPODA 437 
and position to that of the Musk-Deer, descended from each side 
of the upper jaw. These were present in both sexes, but very 
much smaller in the female, as was also the flange-like process of 
the lower jaw by which they were guarded. Behind these, and 
at some distance from them, were on each side above and below 
six cheek-teeth, of comparatively small size, placed in continuous 
series, each with a pair of oblique ridges conjoined internally and 
diverging externally in a V-like manner, and provided with a 
stout basal cingulum. The normal dental formula was therefore 
iQ ef p Rm Z= 34; and the dentition had thus already attained 
a remarkable degree of specialisation, although the brain was 
smaller and more rudimentary in characters than in almost any other 
Fig. 190.—Skeleton of Uintatkerium minabile. w natural size. (From Marsh, 
am, Journ, Sei, vol. xii. pl. 2.) 
known mammal. In its comparative length and the absence of a 
third trochanter the femur of these animals resembles that of the 
Proboscidea. The first discovered evidences of the existence of 
animals of this group were deseribed by Leidy in 1872. under the 
name of Uinfatherium (from the Uinta mountains, near which they 
were found). Subsequently the names Dinoecras, Tinoceras, Loro- 
lophodon, ete., have been applied to various members of the group. 
but the characters by which they are distinguished do not seem of 
suttcient importance to allow of their separation from the type 
genus Cinfatherium. 
Coryphodon* —Another interesting form referred to this suborder 
is Coryphodon, which appears to connect the Cintatheriide with the 
most primitive Perissodactrla. It was first described by Owen in 
1 For detailed descriptions and figures of this group, see Marsh. *t Monograph 
of the Dinocerata.” Rep. US. Geol. Stare. vol. x. (1SS4°. 
> Owen, Bris, Foss. Mamm, and Birds, p. 299 (1846. 
