Cephalodiscida
Order in the class Pterobranchia in the phylum Hemichordata
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Cephalodiscida is one of two orders in the class Pterobranchia, which are small, worm-shaped animals. Members belong to the hemichordates.[2][3] Species in this order are sessile, living in clear water and secrete tubes on the ocean floor.[4]
| Cephalodiscida Temporal range: | |
|---|---|
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| Cephalodiscus dodecalophus | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Hemichordata |
| Class: | Pterobranchia |
| Order: | Cephalodiscida Fowler, 1892 |
| Families | |
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| Synonyms | |
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Taxonomy
The following taxa are recognised in the order Cephalodiscida:[1][5][6]
- Order Cephalodiscida Fowler, 1892
- Family Cephalodiscidae Harmer, 1905
- Genus Atubaria Sato, 1936
- Genus Cephalodiscus M'Intosh, 1882
- Genus †Aellograptus Obut, 1964
- Genus †Eocephalodiscus Kozłowski, 1949
- Genus †Melanostrophus Öpik, 1930
- Genus †Pterobranchites Kozłowski, 1967
- Family †Rotaciurcidae Briggs & Koch, 2023[6]
- Genus †Rotaciurca Briggs & Koch 2023[6]
- Family Cephalodiscidae Harmer, 1905
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