Omalogyra

Omalogyra
Shell of Omalogyra zebrina (paratype at MNHN, Paris)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Infraclass:	"Lower Heterobranchia"
Superfamily:	Omalogyroidea
Family:	Omalogyridae
Genus:	Omalogyra Jeffreys, 1860
Type species
Skenea nitidissima (Adams, 1800), sensu Forbes & Hanley, 1850
Synonyms
Ammonicerina O. G. Costa, 1861 Helisalia Laseron, 1954 Homalogyra Jeffreys, 1867 (unjustified emendation)

Omalogyra is a genus of minute marine gastropod molluscs in the family Omalogyridae.

This genus includes the smallest gastropods, with adult sizes of 1 mm and even less.

Species

Species within the genus Omalogyra include:

• Omalogyra ammonitoides (Powell, 1940)
• Omalogyra antarctica Egorova, 1991
• Omalogyra atomus (Philippi, 1841) - atom snail
• Omalogyra burdwoodiana Strebel, 1908
• Omalogyra densicostata (Jeffreys, 1884)
• Omalogyra disculus Palazzi, 1988
• Omalogyra fusca Suter, 1908(Jeffreys, 1884)
• Omalogyra fuscopardalis Rolán, 1992
• Omalogyra liliputia (Laseron, 1954)
• Omalogyra simplex (Costa O.G., 1861)
• Omalogyra taludana Castellanos, 1989
• Omalogyra undosa Palazzi, 1988
• Omalogyra zebrina Rolán, 1992

Species brought into synonymy

• Omalogyra (Ammonicera) Vayssière, 1893: synonym of Ammonicera Vayssière, 1893
• Omalogyra (Ammonicera) planorbis (Dall, 1927): synonym of Palazzia planorbis (Dall, 1927)
• Omalogyra (Ammonicera) rota Forbes & Hanley, 1850: synonym of Ammonicera rota (Forbes & Hanley, 1850)
• Omalogyra atomus (Philippi, 1841) sensu Arnaud, 1972: synonym of Omalogyra antarctica Egorova, 1991 (misapplication)
• Omalogyra ausonia Palazzi, 1988: synonym of Palazzia ausonia (Palazzi, 1988)
• Omalogyra bicarinata Suter, 1908: synonym of Zerotula bicarinata (Suter, 1908)
• Omalogyra discula Palazzi, 1988: synonym of Omalogyra disculus Palazzi, 1988
• Omalogyra fischeriana Monterosato, 1869: synonym of Ammonicera fischeriana (Monterosato, 1869)
• Omalogyra nodicarinata Sleurs, 1983: synonym of Ammonicera nodicarinata (Sleurs, 1985)
• Omalogyra planorbis (Dall, 1927): synonym of Palazzia planorbis (Dall, 1927)
• Omalogyra pulcherrima Brazier in Henn & Brazier, 1894: synonym of Liotella pulcherrima (Brazier in Henn & Brazier, 1894)
• Omalogyra vangoethemi Sleurs, 1983: synonym of Ammonicera vangoethemi (Sleurs, 1985)

References

• "Omalogyra". Integrated Taxonomic Information System.
• Jeffreys, J.G. 1859. Notes on British Mollusca, in answer to Mr William Clark's remarks on "Gleanings in British Conchology". Annals and Magazine of Natural History 3: 496-499
• Jeffreys, J. G. (1860). Sur le mollusque designé par MM. Forbes & Hanley sous le nom de Skenea nitidissima. Journal de Conchyliologie. 8: 108-111.
• Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213
• Rolàn, E., 1992. The family Omalogyridae G.O. Sars, 1878 (Mollusca, Gastropoda) in Cuba with description of eight new species. Apex 7(2): 35-46

External links

• Costa, O. G. (1861). Microdoride mediterranea; o, Descrizione de poco ben conosciuti od affatto ignoti viventi minuti e micoscropici del Meditterraneo, pel professore O. G. Costa. Tomo primo. Con tredici tavole. i-xviii, 1-80. Stamperia dell'Iride, Napoli
• Laseron, C. F. (1954). Revision of the Liotiidae of New South Wales. The Australian Zoologist. 12 (1): 1-25
• Tate R. 1868. Appendix to the Manual of the Mollusca of S.P. Woodward, A.L.S. London, Virtue & Co., 86 pp