megatherian mammal

Thesaurus

Noun

1.megatherian mammal - a large extinct ground sloth megatherian, megatheriidedentate - primitive terrestrial mammal with few if any teeth; of tropical Central America and South Americafamily Megatheriidae, Megatheriidae - extinct ground slothsground sloth, megathere - gigantic extinct terrestrial sloth-like mammal of the Pliocene and Pleistocene in America