翻訳と辞書 Words near each other ・ Megasemum asperum ・ Megasis ・ Megasis alpherakii ・ Megasis hyrcanella ・ Megasis lesurella ・ Megasis noctileucella ・ Megasis philippella ・ Megasis pupillatella ・ Megasis ragonoti ・ Megasis rippertella ・ Megasis satanella ・ Megasite ・ Megaskepasma ・ Megasoma ・ Megantara Air ・ Megantereon ・ Meganthias carpenteri ・ Meganthribus ・ Meganthribus pupa ・ Meganthropus ・ Megantoni National Sanctuary ・ Meganuclease ・ Meganuclease I-SceI ・ Meganulon ・ Meganupiru ・ Meganyctycia ・ Megaodynerus ・ Megaoryzomys ・ Megapalaeolenus ・ Megapallifera Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Megantereon ： ウィキペディア英語版 Megantereon ''Megantereon'' was a genus of prehistoric machairodontine saber-toothed cat that lived in North America, Eurasia, and Africa. It may have been the ancestor of ''Smilodon''. ==Fossil range== Fossil fragments have been found in Africa, Eurasia, and North America. The oldest confirmed records of ''Megantereon'' are known from the Pliocene of North America and are dated to about 4.5 Million years. About 3-3.5 Million years ago, it is firmly recorded also from Africa (for example, in Kenya), about 2.5 to 2 Million years ago also from Asia. In Europe the oldest remains are known from Les Etouaries (France), a site which is now dated to less than 2.5 Million years old. Therefore a North American origin of ''Megantereon'' has been suggested. However, recent findings of fragmentary fossils from Kenya and Chad, which are dated to about 5.7 and 7 Million years, respectively, are probably from ''Megantereon''. If these identifications are right, they would represent the oldest ''Megantereon'' fossils in the world. The new findings therefore indicate an origin of ''Megantereon'' in the Late Miocene of Africa.〔De Bonis, L., Peigne, S., Mackaye, H. T., Likius, A., Vignaud, P., Brunet, M. (2010). New sabre-toothed cats in the Late Miocene of Toros Menalla (Chad). Systematic palaeontology (Vertebrate palaeontology) ''Comptes Rendus Palevol'' 9, 221-227.〕 At the end of the Pliocene it evolved into the larger ''Smilodon'' in North America, while it survived in the Old World until the middle Pleistocene. The youngest remains of ''Megantereon'' from east Africa are about 1.5 million years old. In southern Africa, the genus is recorded from Elandsfontein, a site dated to around 700,000-400,000 years old. Remains from Untermaßfeld show that ''Megantereon'' lived until 900,000 years ago in Europe. In Asia, it may have survived until 500,000 years ago, as it is recorded together with ''Homo erectus'' at the famous site of Zho-Khou-Dien in China. The only full skeleton was found in Senéze, France. 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「Megantereon」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.