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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 Pravusuchus ： ウィキペディア英語版 Pravusuchus ''Pravusuchus'' is an extinct genus of leptosuchomorph phytosaurid phytosaur known from the Late Triassic (Norian stage) of Arizona, USA. It contains a single species, ''Pravusuchus hortus'', which is known from three specimens. These specimens were previously referred to ''Smilosuchus'' or to ''Leptosuchus'', but ''Pravusuchuss autapomorphy, its phylogenetic position as well as a trait shared with pseudopalatines, justified the erection of a new taxon for the material. ==Discovery and naming== ''Pravusuchus'' was first described and named by Michelle R. Stocker in 2010 and the type species is ''Pravusuchus hortus''. The generic name is derived from Latin, ''pravus'', "evil" or "wicked", and Greek, ''souchus'', for the Egyptian crocodile-headed god Sobek. The specific name, ''hortus'', is the Latin word for park or grounds. The name refers to Devil’s Playground, the locality in Petrified Forest National Park from which all specimens of this taxon were collected. ''Pravusuchus'' is known from the holotype AMNH FR 30646, mostly complete but partially disarticulated skull, and from the referred specimens PEFO 31218, a partial skull, and PEFO 34239, partial skull, partial mandible, and possible partial postcrania. Although the holotype is slightly crushed dorsoventrally, it is not as flattened as PEFO 31218. All specimens referable to ''Pravusuchus'' were collected from the Sonsela Sandstone Bed (later referred to as Jasper / Rainbow Forest Bed〔) of the Norian-aged Sonsela Member, Chinle Formation from Navajo County, Arizona. PEFO 31218 and PEFO 34239 were found in the same stratigraphic horizon just west of Colbert’s 1946 locality where AMNH FR 30646 was collected, and only 2–3 m higher stratigraphically than the holotype.〔 Other phytosaur specimens from the Sonsela Member occur in other beds, stratigraphically lower (e.g. ''Protome batalaria'', ''Smilosuchus adamanensis''〔 and ''S. lithodendrorum'') or higher (e.g. ''Machaeroprosopus jablonskiae'' and ''M. pristinus'') then the white Rainbow Forest sandstone.〔 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「Pravusuchus」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.