Mesonychidae

plural noun

Mes·​onych·​i·​dae

ˌme|zōˈnikəˌdē,

ˌmē|,

|sō-

: a family of extinct creodont carnivorous mammals from the Paleocene and Eocene of North America and Europe

Word History

Etymology

New Latin, from Mesonych-, Mesonyx, type genus + -idae

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