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]
Rhabdopleurida
| |
---|---|
![]() | |
Rhabdopleura normani | |
Scientific classification | |
Kingdom: | |
Phylum: | |
Class: | |
Subclass: | |
Order: |
Rhabdopleurida
|
Family: | Rhabdopleuridae Allman, 1869[1] |
Genera | |
| |
Synonyms | |
|
This small order is monotypic. It has only a single extant genus, containing four to six living species.
Order Rhabdopleurida Fowler, 1892
Extinct species:
This hemichordate-related article is a stub. You can help Wikipedia by expanding it. |