翻訳と辞書 Words near each other ・ Odontoglossum cruentum ・ Odontoglossum gloriosum ・ Odontoglossum hallii ・ Odontoglossum lindleyanum ・ Odontoglossum luteopurpureum ・ Odontoglossum naevium ・ Odontoglossum nobile ・ Odontoglossum odoratum ・ Odontoglossum praenitens ・ Odontoglossum praestans ・ Odontoglossum ringspot virus ・ Odontoglossum schillerianum ・ Odontoglossum spectatissimum ・ Odontoglossum tenue ・ Odontoglossum tripudians ・ Odontognathae ・ Odontognathus ・ Odontognophos ・ Odontogriphus ・ Odontohenricia ・ Odontolabis ・ Odontolabis castelnaudi ・ Odontolabis cuvera ・ Odontolabis dalmani ・ Odontolabis delesserti ・ Odontolabis femoralis ・ Odontolabis gazella ・ Odontolabis lowei ・ Odontolabis siva ・ Odontolamia sellata 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 Odontognathae ： ウィキペディア英語版 Odontognathae Odontognathae is a disused name for a paraphyletic group of toothed prehistoric birds. The group was originally proposed by Alexander Wetmore, who attempted to link fossil birds with the presence of teeth, specifically of the orders Hesperornithiformes and Ichthyornithiformes. As such they would be regarded as transitional fossils between the reptile-like "Archaeornithes" like ''Archaeopteryx'' and modern birds. They were described by Romer as birds with essentially modern anatomy, but retaining teeth.〔Romer, A. S. & Parsons, T. S. (1985): ''The Vertebrate Body.'' (6th ed.) Saunders, Philadelphia.〕 ==Traits== Unlike the dinosaur-like "Archaeornithes", the various types of birds assigned to the Odontognathae had short tails with a plowshare-shaped pygostyle and a well developed carina for flight muscle. They also shared the feature of intramandibular articulation, something that is actually absent in ''Archaeopteryx'', but found in many of its theropod relatives.〔Sereno, P., Forster, Rogers and Monetta, (1993): "Primitive dinosaur skeleton from Argentina and the early evolution of Dinosauria." ''Nature'', 361: 64-66.〕 The brains of the "odontognath" birds appear to be somewhat simpler than those of modern birds and have retained some "reptilian" traits.〔Edinger, Tilly (1951). ''The Brains of the Odontognathae''. Society for the Study of Evolution. p. 6〕 Ornithologist Alan Feduccia has used this, and the presence of the intramandibular articulation (a trait also found in mosasaurs and living varanid lizards) as arguments that the Odontognathae and thus the birds as a whole have not evolved from theropod dinosaurs, but non-dinosaur thecodonts. This theory is contested by most paleontologists. 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「Odontognathae」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.