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Eccentrotheca : ウィキペディア英語版 | Eccentrotheca
''Eccentrotheca'' is a genus of sclerite-bearing marine organism known from Cambrian deposits. Its sclerite form rings that are stacked to produce a widening-upwards conical scleritome. Individual plates have been homologized with the valves of brachiopods, and a relationship with the phoronids is also likely at a stem-group level.〔 Its pointed end terminated in a stub that probably fastened it to a hard sea floor; its open end has been interpreted as a filter-feeding aperture.〔 ==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「Eccentrotheca」の詳細全文を読む
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