Cephalodiscida
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| Cephalodiscida | |
|---|---|
| File:Cephalodiscus dodecalophus McIntosh.png | |
| Cephalodiscus dodecalophus | |
| Scientific classification Edit this classification | |
| Kingdom: | Animalia |
| Phylum: | Hemichordata |
| Class: | Pterobranchia |
| Order: | Cephalodiscida Fowler, 1892 |
| Families | |
| Synonyms | |
| |
Cephalodiscida is one of two orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates.[1][2] Species in this order are sessile, living in clear water and secrete tubes on the ocean floor.[3]
Taxonomy
[edit | edit source]The order is a small one, with only two known families, each containing a single extant genus. The validity of the family Atubaridae, who has only a sole member, is regarded as questionable.[4]
- Order Cephalodiscida Fowler 1892[5]
- Family Cephalodiscidae Harmer 1905
- Genus †Aellograptus Obut 1964
- Genus †Eocephalodiscus Kozlowski 1938 ex Kozlowski 1949
- Genus †Melanostrophus Öpik 1930 ex Öpik 1933
- Genus †Pterobranchites Kozlowski 1967
- Genus Atubaria Sato 1936
- Genus Cephalodiscus M'Intosh 1882
- Family †Rotaciurcidae Briggs and Koch 2023
- Genus †Rotaciurca Briggs and Koch 2023
- Family Cephalodiscidae Harmer 1905
References
[edit | edit source]
Wikispecies has information related to Cephalodiscida.
- ^ animaldiversity.ummz.umich.edu Archived June 29, 2011, at the Wayback Machine
- ^ Eol.org
- ^ Shipley, A.E. (1902). Zoology: An Elementary Textbook. Cambridge: Cambridge University Press.
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