Amphicyon ("ambiguous dog") is an extinct genus of large carnivorous bone-crushing mammals, popularly known as bear-dogs, of the family Amphicyonidae, subfamily Amphicyoninae, from the Miocene Epoch until the early Pleistocene. They ranged over North America, Europe, Asia, and Africa from 16.9—2.6 Ma ago, existing approximately 14.3 million years.
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