Rhabdopleurida
Order of hemichordates in the pterobranchian class
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Rhabdopleurida is one of three orders in the class Pterobranchia, which are small, worm-shaped animals, and the only surviving graptolites.[2][3] Members belong to the hemichordates.[4][5] 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.[6] Rhabdopleura is the best studied pterobranch in developmental biology.[7]
| Rhabdopleurida Temporal range: | |
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| Various members of Rhabdopleuridae | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Hemichordata |
| Class: | Pterobranchia |
| Subclass: | Graptolithina |
| Order: | Rhabdopleurida Fowler, 1892[1] |
| Family: | Rhabdopleuridae Harmer, 1905[1] |
| Genera | |
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See Genera | |
| Synonyms | |
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Genera
The family contains a single extant genus, Rhabdopleura. Based on Maletz and Beli (2018), the following genera are recognised in the family Rhabdopleuridae:[1]
Order Rhabdopleurida Fowler, 1892
- Family Rhabdopleuridae Harmer, 1905
- Genus Rhabdopleura Allman in Norman, 1869
- Genus †Archaeolafoea Chapman, 1919
- Genus †Chaunograptus Hall, 1882
- Genus †Sokoloviina Kirjanov, 1968
- Genus †Epigraptus Eisenack, 1941
- Genus †Graptovermis Kozłowski, 1949
- Genus †Haplograptus Ruedemann, 1933
- Genus †Kystodendron Kozłowski, 1959
- Genus †Rhabdopleurites Kozłowski, 1967
- Genus †Rhabdopleuroides Kozłowski, 1961
- Genus †Sphenoecium Chapman & Thomas, 1936
- Genus †Stolonodendrum Kozłowski, 1949
Genera interpreted as possible stolons of members of Rhabdopleuridae:[1]
- Genus †Calyxhydra Kozłowski, 1959
- Genus †Chitinodendron Eisenack, 1937
- Genus †Diplohydra Kozłowski, 1959
- Genus †Flexihydra Kozłowski, 1959
- Genus †Lagenohydra Kozłowski, 1959
- Genus †Palaeokylix Eisenack, 1932
- Genus †Palaeotuba Eisenack, 1934
- Genus †Phragmohydra Kozłowski, 1959
- Genus †Rhabdohydra Kozłowski, 1959
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