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Amphiura
''Amphiura'' is a large genus of brittle stars (Ophiuroidea) found in oceans worldwide from tropics to Arctic and Antarctic regions. ==Systematics and phylogeny== ''Amphiura'' is a large genus that is currently divided into the following six subgenera: ''Amphioplus'', ''Amphiura'', ''Fellaria'', ''Ophionema'', ''Ophiopelte'' and ''Ophiopeltis''. The once used subgenus ''Acrocnida'' has been elevated to a genus rank. Fossil record of the genus date back to Turonian (''Amphiura plana'').〔Storc, The ophiuroid Amphiura? plana in nearshore settings of the Bohemian Cretaceous Basin (Czech Republic)R.Geologia Carpathica,Vol.55, No 1(2004)〕
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「Amphiura」の詳細全文を読む
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