megatherian mammal


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Noun1.megatherian mammal - a large extinct ground slothmegatherian mammal - a large extinct ground sloth  
edentate - primitive terrestrial mammal with few if any teeth; of tropical Central America and South America
family Megatheriidae, Megatheriidae - extinct ground sloths
ground sloth, megathere - gigantic extinct terrestrial sloth-like mammal of the Pliocene and Pleistocene in America