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Borophagus hilli : ウィキペディア英語版 | Borophagus hilli
''Borophagus hilli'' ("devouring glutton") is an extinct species of the genus ''Borophagus'' of the subfamily ''Borophaginae'', a group of canids endemic to North America from the early Miocene epoch (23.3 Mya) through the Pliocene epoch (4.9 Mya). ''Borophagus dudleyi'' existed for approximately .〔(PaleoBiology Database: ''Borophagus dudleyi'', basic info )〕 ==Overview== ''Borophagus hilli'' was named by C. S. Johnston in 1939.〔C. S. Johnston. 1939. Journal of Paleontology〕 ''Borophagus dudleyi'', like other ''Borophaginae'', are loosely known as "bone-crushing" or "hyena-like" dogs. Though not the most massive borophagine by size or weight, it had a more highly evolved capacity to crunch bone than earlier, larger genera such as ''Epicyon'', which seems to be an evolutionary trend of the group (Turner, 2004). During the Pliocene epoch, ''Borophagus'' began being displaced by ''Canis'' genera such as ''Canis edwardii'' and later by ''Canis dirus''. Early species of ''Borophagus'' were placed in the genus ''Osteoborus'' until recently, but the genera are now considered synonyms.〔 ''Borophagus hilli'' possibly led a hyena-like lifestyle scavenging carcasses of recently dead animals.
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