Akera
Appearance
Akera Temporal range:
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shells of Akera bullata | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Heterobranchia |
Clade: | Euopisthobranchia |
Clade: | Anaspidea |
Superfamily: | Akeroidea |
Family: | Akeridae |
Genus: | Akera O. F. Müller, 1776[1] |
Species | |
See text | |
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Synonyms[2] | |
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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[edit]
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[edit]
- 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 constricta Kuroda, 1947
- 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 spirata Staadt, 1913
- † Akera striatella Lamarck, 1804 - fossil from the Eocene and Oligocene.
- Synonyms
- Akera aperta Hedley, 1899: synonym of Oxynoe aperta (Hedley, 1899) (original combination)
- † Akera eliai Shalem, 1928 : synonym of † Hamlinia eliai (Shalem, 1928) (original combination)
- Akera flexilis T. Brown, 1844: synonym of Akera bullata O. F. Müller, 1776
- Akera tasmanica Beddome, 1883 [4] synonym of Diaphana tasmanica (Beddome, 1883)
- Akera thompsoni Olsson & T. L. McGinty, 1951: synonym of Akera bayeri Ev. Marcus & Er. Marcus, 1967 (unavailable name, no description)
References[edit]
- ^ 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.
- ^ a b 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[edit]
- Leach, W.E. (1852). Molluscorum Britanniae Synopsis. A synopsis of the Mollusca of Great Britain arranged according to their natural affinities and anatomical structure (VIII ed.). London: Van Voorst. pp. 1–376.
- Locard, A. (1886). Prodrome de malacologie française. Catalogue général des mollusques vivants de France. Mollusques marins. Lyon: H. Georg & Paris: Baillière. pp. 1–778.
- Jeffreys, J.G. (1862–1869). British conchology vol. 1-5. London: van Voorst. pp. 1–429.
{{cite book}}
: CS1 maint: date format (link) - Gofas, S.; Le Renard, J.; Bouchet, P (2001). "Mollusca. in: Costello, M.J. et al. (eds), European Register of Marine Species: a check-list of the marine species in Europe and a bibliography of guides to their identification" (PDF). Patrimoines Naturels. 50: 180–213.
{{cite journal}}
: CS1 maint: multiple names: authors list (link) - Valdés Á. & Barwick K. (2005). "First record of Akera Müller, 1776, from the Eastern Pacific, with the description of a new species". The Nautilus. 119 (1): 43–49.
- Akeroidea at Sea Slug Forum showing Akera soluta
- Akera soluta at Sea Slug Forum
- Akera bullata