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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 Rhenopterus ： ウィキペディア英語版 Rhenopterus ''Rhenopterus'' is an extinct prehistoric eurypterid. ''Rhenopterus'' lived in the Lower Devonian period in Europe and possibly North America. ==Description== Rhenopterids were small, characterized by scattered tubercules and knobs on the outer surface of the exoskeleton. Their first two (or possibly three) pairs of walking legs had spines; the last two pairs were long and powerful, without spines. The prosoma (head) was subtrapezoidal, with arcuate compound eyes on parallel axes. The male genital appendages were short with two distal spines.〔Størmer, L. (1955) Merostomata. ''Treatise on Invertebrate Paleontology, Part P Arthropoda 2, Chelicerata'', P39.〕 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「Rhenopterus」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.