翻訳と辞書 Words near each other ・ Mia-Sophie Wellenbrink ・ MIA. ・ MIA/NYC NonStop ・ MIA2 ・ MIAA ・ Miaad Shahriar Tehran F.C. ・ MIAB ・ Miab, East Azerbaijan ・ Miabi ・ Miabi Territory ・ MIAC ・ MIACAH F1 mine ・ Miacatlán ・ Miach ・ Miacidae ・ Miacis ・ Miacis cognitus ・ MiaCMS ・ Miacoidea ・ Miacora ・ Miacora adolescens ・ Miacora diphyes ・ Miacora leucocraspedontis ・ Miacora luzena ・ Miacora perplexa ・ Miacora tropicalis ・ Miadanandriana ・ Miadanasuchus ・ MiaDonna ・ Miadzhik 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 Miacis ： ウィキペディア英語版 Miacis ''Miacis'' is a genus of extinct carnivorous mammals that appeared in the late Paleocene and continued through the Eocene. The genus ''Miacis'' is not monophyletic but a diverse collection of species that belong to the stemgroup within the Carnivoramorpha.〔Wesley-Hunt, G.D.; Flynn J.J. (2005). Phylogeny of the Carnivora: Basal Relationships Among the Carnivoramorphans, and Assessment of the Position of 'Miacoidea' Relative to Carnivora. Journal of Systematic Paleontology, 3: 1-28. 〕 As such, most ''Miacis'' species belong to the group of early carnivores that represent the ancestors of the modern order, the crown-group Carnivora. However, the species ''Miacis cognitus'' is placed not in the stem-group but among the Caniformia,〔Spaulding, M.; Flynn J.J.; Stucky, R.K. (2010) Anew basal Carnivoramorphan (Mammalia) from the ‘Bridger B’ (Black’s Fork Member, Bridger Formation, Bridgerian NALMA, Middel Eocene) of Wyoming, USA. Paleontology 53: 815-832. 〕 one of the two suborders of the crown-group Carnivora. ''Miacis'' species were five-clawed, about the size of a weasel (~30 cm), and lived on the North American and European continents. They retained some primitive characteristics such as low skulls, long slender bodies, long tails, and short legs. ''Miacis'' retained 44 teeth, although some reductions in this number were apparently in progress and some of the teeth were reduced in size. The hind limbs were longer than the forelimbs, the pelvis was dog-like in form and structure, and some specialized traits were present in the vertebrae. It had retractable claws, agile joints for climbing, and binocular vision. ''Miacis'' and related forms had brains that were relatively larger than those of the creodonts, and the larger brain size as compared with body size probably reflects an increase in intelligence. Like many other early carnivoramorphans, it was well suited for an arboreal climbing lifestyle with needle sharp claws, and had limbs and joints that resemble those of modern carnivorans. ''Miacis'' was probably a very agile forest dweller that preyed upon smaller animals, such as small mammals, reptiles, and birds, and might have also have eaten eggs and fruits. ==References== 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「Miacis」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.