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Choiaella
''Choiaella'' is an extinct genus of demosponge ranging from the Chengjiang lagerstatten until the Lower Silurian. It is closely related to the genera ''Choia'' and ''Allantospongia'', which the Chengjiang fauna species ''C. radiata'' coexisted sympatrically with. The species ''C. scotica'' is known from the Caradoc-aged fine sandstone of Wallace's Cast, Southern Uplands of Scotland.〔 The Silurian species has not been formally named.〔 ==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「Choiaella」の詳細全文を読む
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