WoRMS taxon details
Omalogyra Jeffreys, 1859
138276 (urn:lsid:marinespecies.org:taxname:138276)
accepted
Genus
Truncatella atomus R. A. Philippi, 1841 accepted as Omalogyra atomus (R. A. Philippi, 1841) (type by subsequent designation)
Ammonicerina O. G. Costa, 1861 · unaccepted
Euomphalus (Omalogyra) Jeffreys, 1859 · unaccepted (original rank)
Helisalia Laseron, 1954 · unaccepted
Homalogyra Jeffreys, 1867 · unaccepted (unjustified emendation)
- Species Omalogyra ammonitoides (A. W. B. Powell, 1940)
- Species Omalogyra antarctica Egorova, 1991
- Species Omalogyra atomus (R. A. Philippi, 1841)
- Species Omalogyra burdwoodiana Strebel, 1908
- Species Omalogyra disculus Palazzi, 1988
- Species Omalogyra fusca Suter, 1908
- Species Omalogyra fuscopardalis Rolán, 1992
- Species Omalogyra liliputia (Laseron, 1954)
- Species Omalogyra simplex (O. G. Costa, 1861)
- Species Omalogyra taludana Castellanos, 1989
- Species Omalogyra undosa Palazzi, 1988
- Species Omalogyra zebrina Rolán, 1992
- Subgenus Omalogyra (Ammonicera) Vayssière, 1893 accepted as Ammonicera Vayssière, 1893
- Species Omalogyra (Ammonicera) planorbis (Dall, 1927) accepted as Palazzia planorbis (Dall, 1927)
- Species Omalogyra (Ammonicera) rota (Forbes & Hanley, 1850) accepted as Ammonicera rota (Forbes & Hanley, 1850)
- Species Omalogyra atomus (R. A. Philippi, 1841) sensu Arnaud, 1972 accepted as Omalogyra antarctica Egorova, 1991 (unaccepted > misapplication)
- Species Omalogyra ausonia Palazzi, 1988 accepted as Palazzia ausonia (Palazzi, 1988) (superseded combination)
- Species Omalogyra bicarinata Suter, 1908 accepted as Zerotula bicarinata (Suter, 1908) (superseded combination)
- Species Omalogyra discula Palazzi, 1988 accepted as Omalogyra disculus Palazzi, 1988 (Spelling variation)
- Species Omalogyra nodicarinata Sleurs, 1985 accepted as Ammonicera nodicarinata (Sleurs, 1985) (original combination)
- Species Omalogyra planorbis (Dall, 1927) accepted as Palazzia planorbis (Dall, 1927) (unaccepted > superseded combination)
- Species Omalogyra pulcherrima Brazier, 1894 accepted as Liotella pulcherrima (Brazier, 1894)
- Species Omalogyra vangoethemi Sleurs, 1985 accepted as Ammonicera vangoethemi (Sleurs, 1985) (original combination)
marine, fresh, terrestrial
feminine
(of Euomphalus (Omalogyra) Jeffreys, 1859) Jeffreys, J. G. (1859). Additional gleanings in British Conchology. <em>Annals and Magazine of Natural History.</em> (3) 4: 189-201., available online at http://biodiversitylibrary.org/page/2356324
page(s): 197 [details]
page(s): 197 [details]
MolluscaBase eds. (2025). MolluscaBase. Omalogyra Jeffreys, 1859. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=138276 on 2025-07-15
Date
action
by
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
(of Ammonicerina O. G. Costa, 1861) 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., available online at http://biodiversitylibrary.org/item/47094
page(s): 67 [details]
original description (of Homalogyra Jeffreys, 1867) Jeffreys, J. G. (1867). British Conchology, or an Account of the Mollusca which now Inhabit the British Isles and Surrounding Seas. Vol. 4. John Van Voorst, London. 486 pp., 8 pls.
page(s): 67; note: emended from "formerly Omalogyra" [details]
original description (of Helisalia Laseron, 1954) Laseron, C. F. (1954). Revision of the Liotiidae of New South Wales. <em>The Australian Zoologist.</em> 12 (1): 1-25., available online at https://www.biodiversitylibrary.org/page/38912930
page(s): 16 [details]
original description (of Euomphalus (Omalogyra) Jeffreys, 1859) Jeffreys, J. G. (1859). Additional gleanings in British Conchology. <em>Annals and Magazine of Natural History.</em> (3) 4: 189-201., available online at http://biodiversitylibrary.org/page/2356324
page(s): 197 [details]
page(s): 67 [details]
original description (of Homalogyra Jeffreys, 1867) Jeffreys, J. G. (1867). British Conchology, or an Account of the Mollusca which now Inhabit the British Isles and Surrounding Seas. Vol. 4. John Van Voorst, London. 486 pp., 8 pls.
page(s): 67; note: emended from "formerly Omalogyra" [details]
original description (of Helisalia Laseron, 1954) Laseron, C. F. (1954). Revision of the Liotiidae of New South Wales. <em>The Australian Zoologist.</em> 12 (1): 1-25., available online at https://www.biodiversitylibrary.org/page/38912930
page(s): 16 [details]
original description (of Euomphalus (Omalogyra) Jeffreys, 1859) Jeffreys, J. G. (1859). Additional gleanings in British Conchology. <em>Annals and Magazine of Natural History.</em> (3) 4: 189-201., available online at http://biodiversitylibrary.org/page/2356324
page(s): 197 [details]
Other
additional source
Bieler, R. & Mikkelsen, P. M. (1998). <i>Ammonicera</i> in Florida: Notes on the smallest living gastropod in the United States and comments on other species of Omalogyridae (Heterobranchia). <em>The Nautilus.</em> 111 (1): 1–12., available online at http://biodiversitylibrary.org/page/8273723
page(s): 5-6; note: type species discussed [details]
subsequent type designation Coan E.V. & Kabat A.R. (2012) The malacological works and taxa of Sylvanius Hanley (1819-1899). <i>Malacologia</i> 55(2): 285-359.
page(s): 334; note: Truncatella atomus designated type species under Art. 70.3 [details]
subsequent type designation Tate, R. (1868). Appendix to the Manual of the Mollusca of S.P. Woodward, A. L. S. London, Virtue & Co., 86 pp., available online at https://www.biodiversitylibrary.org/page/12171914
page(s): 31 [details]
page(s): 5-6; note: type species discussed [details]
subsequent type designation Coan E.V. & Kabat A.R. (2012) The malacological works and taxa of Sylvanius Hanley (1819-1899). <i>Malacologia</i> 55(2): 285-359.
page(s): 334; note: Truncatella atomus designated type species under Art. 70.3 [details]
subsequent type designation Tate, R. (1868). Appendix to the Manual of the Mollusca of S.P. Woodward, A. L. S. London, Virtue & Co., 86 pp., available online at https://www.biodiversitylibrary.org/page/12171914
page(s): 31 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Image from typetaxon
