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Cotyledion
''Cotyledion tylodes'' is an extinct, stalked filter-feeder known from the Chengjiang lagerstatten. The living animal reached a couple of centimetres in height, and bore a loose scleritome of ovoid sclerites. Its interpretation has been controversial, and it has been previously identified as a carpoid echinoderm, or as a stem group echinoderm. ''C. tylodes'' is now classified as a stem group entoprocta based on new fossils that clearly show a U-shaped gut and a crown of tentacles, . == See also ==
* ''Dinomischus'' * ''Siphusauctum''
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「Cotyledion」の詳細全文を読む
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