Rhabdopleurida
Order of hemichordates in the pterobranchian class / From Wikipedia, the free encyclopedia
Rhabdopleurida is one of three orders in the class Pterobranchia, which are small, worm-shaped animals, are the only surviving graptolites. Members belong to the hemichordates.[2][3] Species in this order are sessile, colonial, connected with a stolon, living in clear water and secrete tubes called tubarium. They have a single gonad, the gill slits are absent and the collar has two tentaculated arms.[4] Rhabdopleura is the best studied pterobranch in developmental biology.[5] Rhabdopleura is the only extant graptolite.[6][7]
Quick Facts Scientific classification, Genera ...
Rhabdopleurida | |
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Rhabdopleura normani | |
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Order: | Rhabdopleurida |
Family: | Rhabdopleuridae Allman, 1869[1] |
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