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Mammacyon
''Mammacyon'' is an extinct genus of medium-sized, mostly carnivorous bone-crushing mammals known as bear dogs, of the family Amphicyonidae endemic to North America during the Oligocene to Miocene living from 30.8—20.6 Ma and existed for approximately . 〔(Paleobiology Database: ''Mammacyon'' Basic info ).〕 ==Taxonomy== ''Mammacyon'' was named by Loomis (1936).〔F. B. Loomis. 1936. Journal of Paleontology 10(1)〕 Its type is ''Mammacyon obtusidens''. It was assigned to Amphicyonidae by Loomis (1936) and Carroll (1988); and to Temnocyoninae by Hunt (1998).〔R. M. Hunt. 1998. Amphicyonidae. in C. M. Janis, K. M. Scott, and L. L. Jacobs 196-227〕
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