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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 Montsecosuchus ： ウィキペディア英語版 Montsecosuchus ''Montsecosuchus'' is an extinct genus of atoposaurid crocodylomorph. It is the replacement generic name for ''Alligatorium depereti'', which was described in 1915 from the Montsec Lithographic Limestone quarry of Spain. Fossils found from this locality are from the Early Cretaceous, being Upper Berriasian-Lower Valanginian in age. While many publications concerning atoposaurids after 1915 have included mentions of ''A. depereti'', none have offered a redescription or revision of the species, even though some recognized that there were great differences between it and other members of the genus. It was noted in these publications that the skull of ''A. depereti'' was shorter in relation to body length than any other species of ''Alligatorium'' (being less than half of the presacral length), and that this may have been evidence for the genetic distinction of the species, although no replacement name was proposed. However, better preparation of the holotype specimen MGB 512, a nearly complete articulated skeleton embedded in a limestone matrix now housed in the Museo de Geología del Ayuntameinto de Barcelona, allowed for a revision of the species in 1990 in which the name ''Montsecosuchus'' was first used. ''Montsecosuchus'' differs in several ways from other atoposaurids such as ''Alligatorium'', ''Alligatorellus'', and ''Theriosuchus''. Several characteristics of the skull including the presence of an ungrooved parietal-squamosal suture and a caudally projecting retroarticular process distinguish ''Montsecosuchus'' from these genera. Both ''Montsecosuchus'' and ''Alligatorellus'' possess three sacral vertebrae: this may be a shared synapomorphy of the two genera. The shortness of the radius is an autapomorphy of the genus that is not seen in any other atoposaurid, although it is common in more derived crocodylomorphs. ==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「Montsecosuchus」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.