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| regnum = Animalia | phylum = ?Cnidaria | classis = ?Anthozoa | subclassis = ?Hexacorallia | ordo = ?Actiniaria | familia = ''Mackenziidae'' | genus = ''Mackenzia'' |genus_authority = Walcott, 1911 |species = ''M. costalis'' |species_authority = Walcott, 1911 }} ''Mackenzia'' is an elongated bag-like animal known from the Middle Cambrian Burgess Shale. It attached directly to hard surfaces, such as brachiopod shells. ''Mackenzia'' was originally described by Charles Walcott in 1911 as a holothurian enchinoderm. Later, ''Mackenzia'' is thought to be a cnidarian and appears most similar to modern sea anemones. == External links == * 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「Mackenzia」の詳細全文を読む スポンサード リンク
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