%paleotherium%

‖n. [ NL., fr. Gr. palaio`s ancient + qhri`on beast. ] (Paleon.) An extinct genus of herbivorous Tertiary mammals, once supposed to have resembled the tapir in form, but now known to have had a more slender form, with a long neck like that of a llama. [ Written also Palæotherium. ] [ 1913 Webster ]