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Climacoceratidae ("ladder horns") is a family of superficially deer-like artiodactyl ungulates restricted to the Miocene of Africa. They are close to the ancestry of giraffes, with some genera, such as ''Prolibytherium'', originally identified as being giraffes. The climacoceratids, namely members of what is now the type genus ''Climacoceras'', were originally placed within the family Palaeomerycidae, and then within Giraffidae. In 1978, Hamilton erected a new family, placing it close to Giraffidae. They differ from giraffes in that their antler-like ossicones are derived from different bones. ==References== * MacInnes, D. G. 1936, "A new genus of fossil deer from the Miocene of Africa", Journal of the Linnean Society, Zoology 39: 521-530. * Hamilton, W. R., 1978, "Cervidae and Palaeomerycidae", 495-508, in Maglio, V. J. & Cooke, H. B. S., (eds.) "Evolution of African mammals", Harvard University Press, Cambridge, Massachusetts & London, England, 1978, xiv-641 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Climacoceratidae」の詳細全文を読む スポンサード リンク
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