Uintatherium \U*in`ta*the"ri*um\, n. [NL., fr. Uinta, the Indian name of the region where the animals were discovered + Gr. qhri`on beast.]

(Paleon.) An extinct genus of large Eocene ungulates allied to Dinoceras. This name is sometimes used for nearly all the known species of the group. See Dinoceras.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Dinoceras \Di*noc"e*ras\, n. [NL., fr. Gr. ? terrible + ?, ?, horn.]

(Paleon.) A genus of large extinct Eocene mammals from Wyoming; -- called also Uintatherium. See Illustration in Appendix.

Note: They were herbivorous, and remarkable for three pairs of hornlike protuberances on the skull. The males were armed with a pair of powerful canine tusks.

Source: Webster's Revised Unabridged Dictionary (1913)