Noun megatheriidae has 1 sense
  1. Megatheriidae, family Megatheriidae - extinct ground sloths
    --1 is a kind of mammal family
    --1 is a member of Xenarthra, suborder Xenarthra
    --1 has members:
     megatherian, megatheriid, megatherian mammal; Megatherium, genus Megatherium
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