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出典:Wikipedia
出典:『Wikipedia』 (2010/02/21 13:33 UTC 版)
Gravigrada is the name of a suborder of Mammals established by the French naturalist Henri-Marie Ducrotay de Blainville in 1839, within the order Quaternates. He included three genera in the suborder: Elephas, Dinotherium and Manatus (Trichechus).
Gravigrada