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出典:Wikipedia
出典:『Wikipedia』 (2011/05/29 06:33 UTC 版)
Cynarctoides is an extinct genus of terrestrial canine of the family Borophaginae and tribe Phlaocyonini which inhabited most of North America during the Whitneyan stage of the Early Oligocene to the Barstovian stage of the Middle Miocene 33.3—13.6 Mya existing approximately 19.7 million years.
Cynarctoides