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Rhabdopleurida is one of three orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates.〔(Animaldiversity.ummz.umich.edu )〕〔( Eol.org )〕 Species in this order are sessile, colonial, living in clear water and secrete tubes called coenecium. ''Rhabdopleura'' is the best studied pterobranchs in developmental biology. Some claim ''Rhabdopleura'' is an extant graptolite. ==Taxonomy== This small order is monotypic. It has only a single genus, containing four to six species. Order Rhabdopleurida * Family Rhabdopleuridae * * Genus ''Rhabdopleura'' * * * ''Rhabdopleura annulata'' Norman, 1921 * * * ''Rhabdopleura compacta'' Hincks, 1880 * * * ''Rhabdopleura grimaldi'' Julien (nomen dubium) * * * ''Rhabdopleura manubialis'' Julien, 1903 (nomen dubium) * * * ''Rhabdopleura normani'' Allmann, 1869 * * * ''Rhabdopleura striata'' Schepotieff, 1909 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「Rhabdopleurida」の詳細全文を読む スポンサード リンク
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