''Tryonia'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

freshwater snail Freshwater snails are gastropod mollusks that live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs t ...

s in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Hydrobiidae Hydrobiidae, commonly known as mud snails, is a large cosmopolitan family of very small freshwater and brackish water snails with an operculum, in the order Littorinimorpha.MolluscaBase eds. (2024). MolluscaBase. Hydrobiidae W. Stimpson, 1865. ...

.Wesselingh F. P., et al. (2006).
Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia.
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Scripta Geologica ''Scripta Geologica'' is a peer-reviewed scientific journal that publishes on vertebrate and invertebrate palaeontology, palaeobotany/palynology, stratigraphy, petrology, and mineralogy, including gemmology with a focus on systematics. It is publis ...

'' 1333 19-290. This genus is sometimes placed in the family Cochliopidae.Bouchet, P. (2014). Tryonia Stimpson, 1865. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=722774 on 2014-11-16 Snails of this genus are very small with narrow shells. Females brood young within the genital tract. Species usually live in springs. The genus is differentiated from others by the structure of the male and female reproductive systems.Hershler, R., et al. (2011)
New species and records of springsnails (Caenogastropoda: Cochliopidae: Tryonia) from the Chihuahuan Desert (Mexico and United States), an imperiled biodiversity hotspot.
''Zootaxa'' 3001 1-32. Most of these snails occur in western North America, especially the Chihuahuan Desert. There are also species known in

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

and

Guatemala Guatemala, officially the Republic of Guatemala, is a country in Central America. It is bordered to the north and west by Mexico, to the northeast by Belize, to the east by Honduras, and to the southeast by El Salvador. It is hydrologically b ...

Species

Species include: * '' Tryonia adamantina'' – Diamond Y springsnail, Diamond tryonia * '' Tryonia aequicostata'' – smooth-rib hydrobe * '' Tryonia alamosae'' – Alamosa springsnail, Caliente tryonia * '' Tryonia angulata'' – Sportinggoods tryonia * '' Tryonia brevissima'' – regal hydrobe * ''

Tryonia brunei Brune's tryonia (also known as Brune's springsnail and Brune spring snail), scientific name ''Tryonia brunei'', is a species of very small freshwater snail that has a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiida ...

'' – Brune's tryonia * '' Tryonia cheatumi'' – Phantom tryonia, Cheatum's snail * '' Tryonia circumstriata'' * '' Tryonia clathrata'' Stimpson, 1865 – grated tryonia (the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

) * '' Tryonia diaboli'' – devil tryonia * '' Tryonia elata'' – Point of Rocks tryonia * '' Tryonia ericae'' – minute tryonia * '' Tryonia gilae'' – Gila tryonia * '' Tryonia imitator'' – mimic tryonia, California brackish water snail * '' Tryonia infernalis'' – Blue Point Tryonia * ''

Tryonia kosteri Koster's tryonia, scientific name ''Tryonia kosteri'', is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae. Distribution This species is endemic to New Mexico ...

'' – Koster's tryonia, Sago tryonia * ''

Tryonia margae ''Tryonia'' is a genus of freshwater snails in the family Hydrobiidae.Wesselingh F. P., et al. (2006).Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia.''Scripta Geologica'' 1333 19-290. This genus is sometimes placed ...

'' – Grapevine Springs elongate tryonia * ''

Tryonia protea ''Tryonia'' is a genus of freshwater snails in the family Hydrobiidae.Wesselingh F. P., et al. (2006).Molluscs from the Miocene Pebas Formation of Peruvian and Colombian Amazonia.''Scripta Geologica'' 1333 19-290. This genus is sometimes placed ...

'' – desert tryonia * '' Tryonia quitobaquitae'' – Quitabaquito tryonia * '' Tryonia robusta'' – robust tryonia * '' Tryonia rowlandsi'' – Grapevine Springs squat tryonia * '' Tryonia salina'' – Cottonball Marsh tryonia * '' Tryonia seemani'' (Frauenfeld, 1863) * '' Tryonia variegata'' – Amargosa tryonia

References

External links

* Myers, P., et al. 2014
''Tryonia''.
The Animal Diversity Web. * Hershler, R. (1999)
A systematic review of the hydrobiid snails (Gastropoda: Rissoidea) of the Great Basin, western United States. Part II. Genera ''Colligyrus'', ''Fluminicola'', ''Pristinicola'', and ''Tryonia''".
''The Veliger'' 42(4) 306-37. * Hershler, R. & F. G. Thompson. (1987)
North American Hydrobiidae (Gastropoda: Rissoacea): redescription and the systematic relationships of ''Tryonia'' Stimpson, 1865 and ''Pyrgulopsis'' Call and Pilsbry, 1886.
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The Nautilus ''Nautilus'' is the fictional submarine belonging to Captain Nemo featured in Jules Verne's novels ''Twenty Thousand Leagues Under the Seas'' (1870) and '' The Mysterious Island'' (1875). Description ''Nautilus'' is described by Verne as ...

'' 101(1) 25-32. * Stimpson, W. (1865). Researches upon the Hydrobiinae and allied forms chiefly made upon materials in the museum of the Smithsonian Institution. ''

Smithsonian Miscellaneous Collections The Smithsonian Contributions and Studies Series is a collection of serial periodical publications produced by the Smithsonian Institution, detailing advances in various scientific and societal fields to which the Smithsonian Institution has made ...

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* Thompson F.G. (2011) ''An annotated checklist and bibliography of the land and freshwater snails of México and central America''. Florida Museum of Natural History, Bulletin 50(1): 1-299. Cochliopidae Taxa named by William Stimpson {{Cochliopidae-stub