There may be differences of opinion among palæontologists as to the appearance presented by this formidable creature when alive, and no doubt the nature of the skin must always be more or less a matter of conjecture in such cases, but we venture to hope that the restoration here given, based as it is upon Mr. Smit’s thorough acquaintance with living animals and Professor Marsh’s description, will meet with a favourable verdict.

Fig. 42.—Skeleton of Tinoceras ingens. (After Marsh.)

Looking at the skeleton, one is struck with a certain resemblance to the rhinoceros on one hand, and to the elephant on the other. The legs are very elephantine, and the feet must have been covered with thick pads, but the body reminds one more of the rhinoceros; and yet, again, there is some suggestion of the hippopotamus. The eye was small and deep set, as in the rhinoceros. In the upper jaw the two canine teeth are developed into dagger-shaped tusks, the use of which can only be conjectured. In the females these are but slightly developed.

Plate XIV.

A LARGE EXTINCT MAMMAL, TINOCERAS INGENS.
From North America. Length about 12 feet (without the tail).