''Somatogyrus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

of very small

freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does in ...

and

brackish water Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuari ...

snail A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class G ...

s that have an operculum, aquatic gastropod

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 ...

s in the family

Lithoglyphidae Lithoglyphidae is a family of small freshwater snails with gills and an operculum, aquatic gastropod mollusks. This family is in the superfamily Truncatelloidea and in the clade Littorinimorpha (according to the taxonomy of the Gastropoda by ...

Species

Species within the genus ''Somatogyrus'' include: * Reverse pebblesnail, '' Somatogyrus alcoviensis'' * '' Somatogyrus aldrichi'' (W) *

Ouachita pebblesnail The Ouachita pebblesnail, scientific name †''Somatogyrus amnicoloides'', was a species of minute freshwater snail with an operculum, an aquatic gastropod mollusc or micromollusc in the family Hydrobiidae. This species was endemic to th ...

, '' Somatogyrus amnicoloides'' *

Golden pebblesnail The golden pebblesnail, scientific name ''Somatogyrus aureus'', is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Lithoglyphidae. This species is endemic to Alabama and T ...

, ''

Somatogyrus aureus The golden pebblesnail, scientific name ''Somatogyrus aureus'', is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Lithoglyphidae. This species is endemic to Alabama and T ...

'' *

Angular pebblesnail The angular pebblesnail, scientific name ''Somatogyrus biangulatus'', is a species of very small freshwater snail with an operculum, an aquatic operculate gastropod The gastropods (), commonly known as snails and slugs, belong to a large ...

, '' Somatogyrus biangulatus'' * Knotty pebblesnail, ''

Somatogyrus constrictus The knotty pebblesnail, scientific name ''Somatogyrus constrictus'', of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Lithoglyphidae. This species is endemic to Alabama in the United St ...

'' *

Coosa pebblesnail The Coosa pebblesnail, scientific name ''Somatogyrus coosaensis'', is a species of small freshwater snails with a gill and an operculum, aquatic gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic ...

, ''

Somatogyrus coosaensis The Coosa pebblesnail, scientific name ''Somatogyrus coosaensis'', is a species of small freshwater snails with a gill and an operculum, aquatic gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic ...

'' *

Thick-lipped pebblesnail The thick-lipped pebblesnail, scientific name ''Somatogyrus crassilabris'', was a species of freshwater snail with an operculum, an aquatic gastropod mollusc in the family Lithoglyphidae. This species was endemic to Baxter County, Arkansas i ...

, ''

Somatogyrus crassilabris The thick-lipped pebblesnail, scientific name ''Somatogyrus crassilabris'', was a species of freshwater snail with an operculum, an aquatic gastropod mollusc in the family Lithoglyphidae. This species was endemic to Baxter County, Arkansas i ...

'' *

Stocky pebblesnail The stocky pebblesnail (''Somatogyrus crassus'') is a species of very small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Lithoglyphidae. This species is endemic to Alabama in the United States. ...

, ''

Somatogyrus crassus The stocky pebblesnail (''Somatogyrus crassus'') is a species of very small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Lithoglyphidae. This species is endemic to Alabama in the United States. ...

'' *

Tennessee pebblesnail The Tennessee pebblesnail (''Somatogyrus currierianus'') is a species of very small freshwater snail with an operculum. It is an aquatic gastropod mollusc in the family Lithoglyphidae. Distribution This species is endemic to the Tennessee ...

, ''

Somatogyrus currierianus The Tennessee pebblesnail (''Somatogyrus currierianus'') is a species of very small freshwater snail with an operculum. It is an aquatic gastropod mollusc in the family Lithoglyphidae. Distribution This species is endemic to the Tennessee ...

'' *

Hidden pebblesnail The hidden pebblesnail, scientific name ''Somatogyrus decipiens'', is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Lithoglyphidae. This species is endemic to Alabama in ...

, ''

Somatogyrus decipiens The hidden pebblesnail, scientific name ''Somatogyrus decipiens'', is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Lithoglyphidae. This species is endemic to Alabama in ...

'' *

Sandbar pebblesnail The Sandbar pebblesnail (''Somatogyrus depressus'') is a species of very small freshwater snail with an operculum. It is an aquatic gastropod mollusc in the family Lithoglyphidae Lithoglyphidae is a family of small freshwater snails with gi ...

, '' Somatogyrus depressus'' *

Ovate pebblesnail The ovate pebblesnail, scientific name ''Somatogyrus excavatus'', is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusc in the family Lithoglyphidae. This species is endemic to Lauderdale County, Alabama ...

, '' Somatogyrus excavatus'' * Cherokee pebblesnail, '' Somatogyrus georgianus'' * Fluted pebblesnail, '' Somatogyrus hendersoni'' * Granite pebblesnail, '' Somatogyrus hinkleyi'' * Atlas pebblesnail, ''

Somatogyrus humerosus The atlas pebblesnail (''Somatogyrus humerosus'') is a species of minute freshwater snail that has an operculum, an aquatic operculate gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of ...

'' *

Ohio pebblesnail The Ohio pebblesnail (''Somatogyrus integra'') is a species of very small freshwater snail with an operculum. It is an aquatic gastropod mollusc in the family Lithoglyphidae. Distribution This species is endemic to the Ohio River The Ohio ...

, '' Somatogyrus integra'' * Dwarf pebblesnail, '' Somatogyrus nanus'' * Moon pebblesnail, '' Somatogyrus obtusus'' *

Sparrow pebblesnail The sparrow pebblesnail, scientific name ''Somatogyrus parvulus'', is a species of minute freshwater snail that has an operculum, an aquatic operculate gastropod micromollusc in the family Lithoglyphidae. This species is endemic to Tennessee in ...

, '' Somatogyrus parvulus'' * Shale pebblesnail, '' Somatogyrus pennsylvanicus'' * Tallapoosa pebblesnail, '' Somatogyrus pilsbryanus'' * Compact pebblesnail, ''

Somatogyrus pumilus The compact pebblesnail (''Somatogyrus pumilus'') is a species of very small freshwater snail with an operculum. It is an aquatic gastropod mollusc in the family Lithoglyphidae. Distribution This species is endemic to rivers in Alabama (We ...

WoRMS Worms may refer to: *Worm, an invertebrate animal with a tube-like body and no limbs Places *Worms, Germany, a city ** Worms (electoral district) * Worms, Nebraska, U.S. *Worms im Veltlintal, the German name for Bormio, Italy Arts and entertai ...

considers one more species than ITIS. It is marked (W) in the list above.

References

Lithoglyphidae Taxonomy articles created by Polbot {{Lithoglyphidae-stub