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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 Spinoaequalis ： ウィキペディア英語版 Spinoaequalis ''Spinoaequalis'' is an extinct genus of diapsid reptile. The 30 cm (1 ft) long creature, known from fossils found in Kansas, USA, was one of the first diapsids, along with ''Petrolacosaurus''. It was also the first reptile to return to the water, evolving shortly after ''Hylonomus'', the oldest confirmed reptile. ''Spinoaequalis'' was not fully aquatic, frequently returning to dry land. It probably swam using its laterally flattened, fanned tail. Its name means "symmetrical spine" referring to its deep, laterally compressed tail. ''Spinoaequalis'' has been found along with beautifully preserved marine fish, suggesting it occasionally left fresh water streams for the sea. ''Spinoaequalis'' was described and named by Michael deBraga and Robert Reisz in 1995. ==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「Spinoaequalis」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.