Arbacioida
| Arbacioida Temporal range: Middle Jurassic–recent | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Echinodermata |
| Class: | Echinoidea |
| Superorder: | Echinacea |
| Order: | Arbacioida Gregory, 1900 |
| Family: | Arbaciidae Gray, 1855 |
The Arbacioida are an order of sea urchins, consisting of a single family, the Arbaciidae. They are distinguished from other sea urchins by the presence of five separate plates around the anus. Unlike their close relatives, the Salenioida, all of the tubercles on their tests are of similar size. It contains these genera:
- Arbacia Gray, 1835
- Arbaciella Mortensen, 1910a
- Arbia Cooke, 1948†
- Baueria Noetling, 1885†
- Codiopsis L. Agassiz, in Agassiz & Desor, 1846†
- Coelopleurus L. Agassiz, 1840a
- Cottaldia Desor, 1856 †
- Dialithocidaris A. Agassiz, 1898
- Habrocidaris A. Agassiz & Clark, 1907b
- Podocidaris A. Agassiz, 1869
- Pygmaeocidaris Döderlein, 1905
- Sexpyga Shigei, 1975
- Tetrapygus L. Agassiz, 1841b
References
- Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 980. ISBN 0-03-056747-5.
- National History Museum. "Arbacioida". Retrieved 19 Dec 2009.
This article is issued from Wikipedia - version of the Monday, November 16, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.