The Collaborative International Dictionary of English v.0.48:
Mylodontidae \Mylodontidae\ n. A natural family of extinct South American edentates. Syn: family Mylodontidae. [WordNet 1.5]WordNet (r) 3.0 (2006):
Mylodontidae n 1: extinct South American edentates [syn: Mylodontidae, family Mylodontidae]