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''Pelorovis'' ("prodigious/monstrous ''sheep''") is an extinct genus of African wild cattle, which first appeared in the Pliocene, 2.5 million years ago,〔Alan Turner & Mauricio Anton: ''Evolving Eden, An Illustrated Guide to the Evolution of the African Large-Mammal Fauna''. Columbia University Press, New York 2004 ISBN 0-231-11944-5 (pp. 159-167)〕 and became extinct at the end of the Late Pleistocene about 12,000 years ago or even during the Holocene, some 4,000 years ago.〔Ronald M. Nowak: ''Walker's Mammals of the World''. Johns Hopkins University Press, 1999 ISBN 0-8018-5789-9〕 Recent detailed anatomical and morphometric studies come to the conclusion that ''Pelorovis'' is probably not monophyletic. According to these findings, the early forms of the genus (''P. turkanensis'' und ''P. oldowayensis'') are close relatives, and possibly the first members, of the genus ''Bos''. In contrast, the late Pleistocene form (''Pelorovis antiquus'') seems to be a close relative of the modern African buffalo (''Syncerus caffer'').〔Bienvenido Martínez-Navarro, Juan Antonio Pérez-Claros, Maria Rita Palombo, Lorenzo Rook, and Paul Palmqvist: ''The Olduvai buffalo'' Pelorovis ''and the origin of'' Bos. Quaternary Research Volume 68, Issue 2, September 2007, Pages 220-226. (online )〕 ==Description== ''Pelorovis'' resembled an African buffalo, although it was larger and possessed longer, curved horns. ''Pelorovis'' probably weighed about , with the largest males attaining . This ranks it as one of the largest bovines, and indeed ruminants ever to have lived, rivaling the extinct American long-horned bison (''Bison latifrons'') and the extant African giraffe (''Giraffa camelopardis''). The bony cores of the horns were each about long; when covered with keratin (which does not survive fossilisation) they could have been up to twice this length. The horns pointed away from the head, each forming a half circle in the species ''Pelorovis oldowayensis'' and ''Pelorovis turkanensis''.〔 The horns of ''Pelorovis antiquus'' were also magnificent but resembled in shape more those of the Water buffalo (''Bubalus''). ''P. antiquus'' was even placed in the Genus ''Bubalus'' by early specialists. ''Pelorovis oldowayensis'' was broadly the same size as modern African buffalo, but its legs were longer, and the elongated head of this species was reminiscent to those of the modern Alcelaphinae. ''Pelorovis antiquus'' was about the same size, but it was more robust. ''Pelorovis antiquus'' disappeared around 12,000 years ago from southern and eastern Africa. Fossil and archaeological evidence indicates, that this species lived in North Africa until 4,000 years ago.〔 ''Pelorovis oldowaywensis'' occurred in sub-Saharan Africa and disappeared 800,000 years ago. The best fossils of ''Pelorovis oldowayensis'' are known from the Olduvai Gorge in Tanzania; a complete skeleton of ''Pelorovis antiquus'' was found near Djelfa in Algeria. 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「Pelorovis」の詳細全文を読む スポンサード リンク
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