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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Torotix ： ウィキペディア英語版 Torotix ''Torotix'' is a Late Cretaceous genus of aquatic birds. They lived along the shores of the Western Interior Seaway, but it is not clear whether they were seabirds or freshwater birds, as the genus is only known from a humerus. Consequently, the genus contains only one known species, ''Torotix clemensi''. ''T. clemensi'' is represented by a single fossil specimen, a partial humerus (upper arm bone) recovered from the Lance formation of Wyoming, deposits dated to the very end of the Cretaceous period, 66 million years ago. ==Classification== ''Torotix'' was first described by Brodkorb in 1963, who initially suggested that it was related to modern flamingos, in the order Phoenicopteriformes.〔Brodkorb (1963). "Birds from the Upper Cretaceous of Wyoming." pp. 50–70 in Sibley (ed.), ''Proceedings of the XIII International Ornithological Congress''.〕 Later researchers thought it was more likely to have been related to the Charadriiformes (waders/shorebirds).〔Olson, S. (1985). "The fossil record of birds." pp. 79–239 in Farner, King and Parkes (eds.), ''Avian Biology vol VIII''. New York: Academic Press.〕 More recent comparative studies have found it to be most similar to Pelecaniformes.〔Hope, S. (2002). "The Mesozoic radiation of Neornithes." pp. 339–388 in Chiappe, L. and Witmer, L.M. (eds), ''Mesozoic Birds: Above the Heads of Dinosaurs''. Berkeley: University of California Press.〕 A cladistic study of the wing bone found ''Torotix'' not to resemble that of the waved albatross (a procellariiform), northern gannet (a "pelecaniform" of the suborder Suli), painted buttonquail (an ancient charadriiform), black-necked stilt (a more advanced charadriiform) or a ''Phoenicopterus'' flamingo noticeably more than any other. However, this comparison provided information only about ecological rather than phylogenetic similarities. The family Torotigidae was initially established to unite this genus with ''Parascaniornis'' and ''Gallornis''. However, the former is now considered a junior synonym of ''Baptornis'' (a hesperornithine), while the latter may be a very early fowl of the group Galloanserae. 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「Torotix」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.