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Archotuba
''Archotuba'' is a genus of elongated conical tubes that were seemingly deposited by colonial organisms. Known from the Chengjiang, its biological affinity is uncertain; it somewhat resembles the tubes of the 'priapulid' ''Selkirkia'', but a cnidarian affinity is also possible. In the absence of soft parts, there really isn't enough data to confirm a biological affiliation. ==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「Archotuba」の詳細全文を読む
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