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Psammoactinia antarctica : ウィキペディア英語版 | Psammoactinia antarctica
''Psammoactinia antarctica'' was an encrusting, colonial cnidarian in the family Hydractiniidae that lived in the Cretaceous Antarctic. Within its family, ''P. antarctica'' had the unusual ability to agglutinate sand and silt grants, incorporating them into the basal layer and pillars making up the wall of the chambers of its laminae. It encrusted gastropod shells inhabited by hermit crabs of the genus ''Paguristes''. The ''Psammoactinia'' colony began with a larva landing on a small gastropod shell. The colony then grew past the aperture of the shell and formed a tube that conformed to the hermit crab’s shape and growing pattern. ==References==
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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「Psammoactinia antarctica」の詳細全文を読む
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