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Mesonychidae

plural noun
Mes·​onych·​i·​dae | \ ˌme|zōˈnikəˌdē, ˌmē|, |sō-\

Definition of Mesonychidae

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

History and Etymology for Mesonychidae

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

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