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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 Rhinosteus ： ウィキペディア英語版 Rhinosteus ''Rhinosteus'' is a genus of small to medium selenosteid arthrodire placoderms known from the Upper Frasnian Kellwasserkalk facies of Late Devonian Germany〔 and Morocco. ''Rhinosteus'' is a typical genus of Kellwasserkalk selenosteids, with short cheeks, and slender inferognathal plates. However, two of the species, ''R. traquairi'', and ''R. tuberculatus'', have long, pointed rostrums, and tubercles on the plates. In ''R. traquairi'', the rostrum is sharply pointed, extending beyond the snout, and the tubercles are small and irregularly placed. In ''R. tuberculatus'', the rostrum is bluntly pointed, and the tubercles are large and plentiful. The species, ''R. parvulus'', has a blunt rostrum that does not extend beyond the snout, and lacks tuberculation all together.〔 The average skull length of ''R. traquairi'' is about 11 centimetres. The average skull length of ''R. tuberculatus'' is 15 centimetres, while that of ''R. parvulus'' is 4 to 6 centimetres. ''R. traquairi'' and ''R. tuberculatus'' are both endemic to Bad Wildungen. ''R. parvulus'' is also found in Bad Wildungen. Rücklin (2011) discusses how specimens of small ''Rhinosteus'' have been found in the Kellwasserkalk facies of the Anti-Atlas of Morocco, and are tentatively referred to ''R. parvulus'' due primarily to their small size.〔 ==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「Rhinosteus」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.