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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 Apatopus ： ウィキペディア英語版 Apatopus ''Apatopus'' is an ichnogenus, or a name based on footprints, that may have been from a phytosaur. The trackmaker lived in the early Triassic. It was named by Baird in 1957. Of special relevance in regards to its phytosaurian identity is the fact that the tracks are positioned in a way that indicates that the limbs were held directly under the body, a gait known in true archosaurs like crocodiles and dinosaurs but previously thought absent in phytosaurs. This raises the question of whereas this trait was shared by the last common ancestor between archosaurs and phytosaurs or if it evolved independently between these groups.〔Padian, K., Li, C., & Pchelnikova, J. 2010. The trackmaker of (Late Triassic, North America): implications for the evolution of archosaur stance and gait. Palaeontology 53, 175-189.〕〔Klein, H. & Lucas, S. G. 2013. The Late Triassic tetrapod ichnotaxon Apatopus lineatus (Bock, 1952) and its distribution. Bulletin of the New Mexico Museum of Natural History 61, 313-324.〕 ==Sources== 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「Apatopus」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.