Akera
| Akera Temporal range: Callovian–recent | |
|---|---|
 | |
| shells of Akera bullata | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchia clade Euthyneura clade Euopisthobranchia clade Aplysiomorpha |
| Superfamily: | Akeroidea |
| Family: | Akeridae |
| Genus: | Akera O. F. Müller, 1776[1] |
| Synonyms[2] | |
| |
Akera is a marine genus of sea hare in the family Akeridae, known from the late Callovian (Jurassic) to the recent periods.[2][3]
Description
Akera is a primitive genus. These sea hares do not fit completely in their external shell; it just covers their visceral hump which is positioned at the posterior end of their bodies. Their streamlined bodies are adapted for burrowing.
Species
- Akera bayeri (Marcus & Marcus, 1967) - It can be found along the coast of Colombia and Brazil.
- Akera bullata (O. F. Müller, 1776) - type species
- Akera julieae Valdes & Barwick, 2005
- Akera silbo Ortea & Moro, 2009
- Akera soluta (Gmelin, 1791) - Also called the Solute akera, this species can be found in the Indo-West Pacific. Little is known about this species. Its shell can grow as large as 45 mm in length.
- † Akera striatella Lamarck, 1804 - fossil from the Eocene and Oligocene.
- Akera tasmanica Beddome, 1883:[4] synonym of Diaphana tasmanica (Beddome, 1883)
References
- ↑ Müller O. F. (1776). Zoologiæ Danicæ prodromus, seu animalium Daniæ et Norvegiæ indigenarum characteres, nomina, et synonyma imprimis popularium. pp. I-XXXII [= 1-32], 1-274. Havniæ. (Hallager). page 242.
- 1 2 Gofas, S. (2012). Akera O.F. Müller, 1776. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137641 on 2012-03-31
- ↑ Sepkoski's Online Genus Database. Downloaded 14 October 2008.
- ↑ Schiøtte T. (1998). "A taxonomic revision of the genus Diaphana Brown, 1827, including a discussion of the phylogeny and zoogeography of the genus (Mollusca: Opisthobranchia)". Steenstrupia. 24: 77–140.
External links
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