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出典:Wikipedia
出典:『Wikipedia』 (2010/10/28 10:45 UTC 版)
Procranioceras is an extinct genus of Artiodactyla, of the family Palaeomerycidae, endemic to Europe and Asia from the Miocene epoch, 16.3—13.6 Ma, existing for approximately 2.7 million years.
Procranioceras