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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 Seymouria ： ウィキペディア英語版 Seymouria ''Seymouria'' was a reptile-like tetrapod from the early Permian of North America and Europe (approximately 280 to 270 million years ago). It was small, only 2 ft (60 cm) long. ''Seymouria'' was well adapted to life on land, with many reptilian features—so many, in fact, that it was first thought to be a primitive reptile. ==Description== The dry climate of the Permian suited reptiles better than amphibians, but ''Seymouria'' had many reptilian features that helped it in this harsh environment. It had long and muscular legs, and may have had dry skin and the ability to conserve water. It may have been able to excrete excess salt from its blood through a gland in its nose, like modern reptiles . All of this meant that ''Seymouria'', unlike amphibians and other early tetrapods, might have lived for extended periods of time away from water. If so, this would have allowed it to move about the landscape in search of insects, small amphibians, and other possible prey, such as the eggs of reptiles. Male ''Seymouria'' had thick skulls that may have been used to batter rivals in mating contests. After mating, the females would have had to return to water to lay their eggs. As in amphibians, the larvae would develop in water, hunting for worms and insects until they were strong enough to live on land. While no larvae are known from ''Seymouria'' itself, fossil larvae of its relative ''Discosauriscus'' and other species in the order Seymouriamorpha have been found, with impressions of external gill structures as in modern amphibians. Fossils of ''Seymouria'' were first found in Seymour, Baylor County, Texas (hence the name of the type species, ''Seymouria baylorensis'', or "Baylor County Seymour one"). Over the years, many well preserved fossils have been found in North America and Germany, including the "Tambach Lovers", two individuals of ''S. sanjuanensis'' fossilized lying next to each other (though of course it cannot be determined whether they really were a couple killed during mating). ''Seymouria agilis'' (Olson, 1980) that is known from only one specimen (holotype UCMP 143 277), a nearly complete skeleton from the Chickasha Formation of Oklahoma, was reassigned by Michel Laurin and Robert R. Reisz as a Macroleter. 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「Seymouria」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.