Omalogyridae are a
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
of minute and microscopic
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
s,
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
* Marine life
* Marine pollution
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* ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusc
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...
s or
micromollusc
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also r ...
s in the informal group
Lower Heterobranchia
Lower Heterobranchia, also known as the Allogastropoda, is a group of rather specialized, highly evolved sea slugs and sea snails, ( marine gastropod mollusks) within the subclass Heterobranchia. WoRMS (2020). "Lower Heterobranchia". Accessed ...
.
[Gofas, S. (2012). Omalogyridae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=1742 on 2012-08-31] Adult shells are usually smaller than 1 millimeter.
This family is poorly known and is tentatively placed in the unresolved infraclass "Lower Heterobranchia". Studies of this group are sketchy and miss or omit the basic information about taxonomy or distribution.
[ Bieler R & Mikkelsen P. (1998), Ammonicera in Florida - Notes on the smallest living gastropod in the United States and comments on other species of Omalogyridae (Heterobranchia); The Nautilus, 111(1):1-12, 1998 ]
Genera
Genera within the family Omalogyridae include:
* ''
Ammonicera''
Vayssiére, 1893
* ''
Omalogyra''
Jeffreys, 1867
* ''
Retrotortina''
Chaster, 1896
* † ''
Schobertinella''
Nützel & Gründel, 2015
; Genera brought into synonymy:
* ''Ammonicerina''
O.G. Costa, 1861: synonym of ''Omalogyra''
Jeffreys, 1859
* ''Helisalia''
Laseron, 1954: synonym of ''Omalogyra''
Jeffreys, 1859
* ''Homalogyra''
Jeffreys, 1867: synonym of ''Omalogyra''
Jeffreys, 1859
References
* Bouchet, P., Rocroi, J.-P. (2005). Classification and nomenclator of gastropod families. Malacologia. 47(1-2): 1-397 .
External links
*
*
Powell A. W. B., ''New Zealand Mollusca'',
William Collins Publishers Ltd, Auckland, New Zealand 1979
Sars, G.O. (1878). Bidrag til Kundskaben om Norges arktiske Fauna. I. Mollusca Regionis Arcticae Norvegiae. Oversigt over de i Norges arktiske Region Forekommende Bløddyr. Brøgger, Christiania. xiii + 466 pp., pls 1-34 & I-XVIII
{{Taxonbar, from=Q3142518