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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 Furca (genus) ： ウィキペディア英語版 Furca (genus) ''Furca'' (Latin for "fork") is an extinct genus of Marrellomorph arthropod known from the Sandbian stage (upper Ordovician period) of the Czech Republic. At least three distinct species have been described although they may all be synonyms of the type species, ''Furca bohemica''. A tentative additional species, "''Furca mauretanica''": was proposed for specimens discovered in Morocco, but this species remains a ''nomen nudum'' until formally published. ==Description== ''Furca'' is characterized by a broad head shield with three pairs of prominent spines: front (anterolateral), side (mediolateral) and rear (posterolateral). The head shield of ''Furca'' ranged from long and at maximum width. The mediolateral spines are long and strongly curved. The outline of the head shield possess a fringe of small, gently curving secondary spines, between long. Appendages are unknown from fossils. 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「Furca (genus)」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.