Somatogyrus
Encyclopedia
Somatogyrus is a genus
of very small freshwater
and brackish water
snail
s that have an operculum
, aquatic
gastropod mollusks in the family Hydrobiidae
.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of very small freshwater
Freshwater
Fresh water is naturally occurring water on the Earth's surface in ice sheets, ice caps, glaciers, bogs, ponds, lakes, rivers and streams, and underground as groundwater in aquifers and underground streams. Fresh water is generally characterized by having low concentrations of dissolved salts and...
and brackish water
Brackish water
Brackish water is water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root "brak," meaning "salty"...
snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
s that have an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...
, aquatic
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
gastropod mollusks in the family Hydrobiidae
Hydrobiidae
Hydrobiidae, common name mud snails, is a large cosmopolitan taxonomic family of very small freshwater snails and brackish water snails that have an operculum, aquatic gastropod mollusks in the clade Littorinimorpha.- Distribution :...
.
Species
Species within the genus Somatogyrus include:- Reverse pebblesnailReverse pebblesnailThe reverse pebblesnail, scientific name Somatogyrus alcoviensis, was a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae....
, Somatogyrus alcoviensis - Oachita pebblesnailOachita pebblesnailThe Oachita pebblesnail, scientific name †Somatogyrus amnicoloides, was a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae....
, Somatogyrus amnicoloides - Goldend pebblesnail, Somatogyrus aureus
- Angular pebblesnailAngular pebblesnailThe angular pebblesnail, scientific name Somatogyrus biangulatus, is a species of very small freshwater snail with an operculum, an aquatic operculate gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. Its natural habitat is rivers.-References:* Mollusc...
, Somatogyrus biangulatus - Knotty pebblesnailKnotty pebblesnailThe knotty pebblesnail, scientific name Somatogyrus constrictus, of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae.-References:* Mollusc Specialist Group 1996. ....
, Somatogyrus constrictus - Coosa pebblesnailCoosa pebblesnailThe Coosa pebblesnail, scientific name Somatogyrus coosaensis, is a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae. This species is endemic to the United States. Its natural habitat is rivers.-References:* Mollusc Specialist...
, Somatogyrus coosaensis - Thick-lipped pebblesnailThick-lipped pebblesnailThe Thick-lipped pebblesnail, scientific name Somatogyrus crassilabris, was a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae, the mud snails. It was endemic to the United States. Its natural habitat was rivers.-References:* Mollusc Specialist...
, Somatogyrus crassilabris - Stocky pebblesnailStocky pebblesnailThe stocky pebblesnail is a species of gastropod in the Hydrobiidae family. It is endemic to the United States. Its natural habitat is rivers.-Source:* Mollusc Specialist Group 2000. .* Downloaded on 7 August 2007....
, Somatogyrus crassus - Tennessee pebblesnailTennessee pebblesnailThe Tennessee pebblesnail is a species of gastropod in the Hydrobiidae family. It is endemic to the United States. Its natural habitat is rivers....
, Somatogyrus currierianus - Hidden pebblesnailHidden pebblesnailThe Hidden pebblesnail, scientific name Somatogyrus decipiens, is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae....
, Somatogyrus decipiens - Ovate pebblesnailOvate pebblesnailThe ovate pebblesnail, scientific name Somatogyrus excavatus, is a species of very small or minute freshwater snails with an operculum, aquatic gastropod mollusks in the family Hydrobiidae. This species is endemic to the United States. Its natural habitat is rivers.-References:* Mollusc Specialist...
, Somatogyrus excavatus - Fluted pebblesnailFluted pebblesnailThe fluted pebblesnail, scientific name Somatogyrus hendersoni, is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. Its natural habitat is rivers.-References:* Mollusc Specialist Group...
, Somatogyrus hendersoni - Granite pebblesnailGranite pebblesnailThe Granite pebblesnail, scientific name Somatogyrus hinkleyi, is a species of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae. This species is endemic to the United States....
, Somatogyrus hinkleyi - Atlas pebblesnailAtlas pebblesnailThe atlas pebblesnail is a species of minute freshwater snail that has an operculum, an aquatic operculate gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. Its natural habitat is rivers....
, Somatogyrus humerosus - Dwarf pebblesnailDwarf pebblesnailThe dwarf pebblesnail, scientific name Somatogyrus nanus, is a species of very small or minute species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae....
, Somatogyrus nanus - Moom pebblesnailMoom pebblesnailThe Moom pebblesnail, scientific name Somatogyrus obtusus, is a species of very small freshwater snail that have an operculum, an aquatic gastropod mollusk in the family Hydrobiidae....
, Somatogyrus obtusus - Sparrow pebblesnailSparrow pebblesnailThe sparrow pebblesnail is a species of gastropod in the Hydrobiidae family. It is endemic to the United States. Its natural habitat is rivers.-Source:* Mollusc Specialist Group 2000. .* Downloaded on 7 August 2007....
, Somatogyrus parvulus - Tallapoosa pebblesnailTallapoosa pebblesnailThe Tallapoosa pebblesnail, scientific name Somatogyrus pilsbryanus, is a species of gastropod in the Hydrobiidae family. It is endemic to the United States. Its natural habitat is rivers.-Source:* Mollusc Specialist Group 2000. ....
, Somatogyrus pilsbryanus - Pygmy pebblesnailPygmy pebblesnailThe pygmy pebblesnail, scientific name Somatogyrus pygmaeus, is a species of very small or minute freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. Its natural habitat is rivers.-References:* Mollusc...
, Somatogyrus pygmaeus - Quadrate pebblesnailQuadrate pebblesnailThe quadrate pebblesnail is a species of gastropod in the Hydrobiidae family. It is endemic to the United States. Its natural habitat is rivers.-Source:* Mollusc Specialist Group 2000. .* Downloaded on 7 August 2007....
, Somatogyrus quadratus - Mud pebblesnailMud pebblesnailThe mud pebblesnail, scientific name Somatogyrus sargenti, is a species of small freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Hydrobiidae. This species is endemic to the United States.-References:...
, Somatogyrus sargenti - Rolling pebblesnailRolling pebblesnailThe rolling pebblesnail is a species of gastropod in the Hydrobiidae family. It is endemic to the United States. Its natural habitat is rivers.-Source:* Mollusc Specialist Group 2000. .* Downloaded on 7 August 2007....
, Somatogyrus strengi - Savannah pebblesnailSavannah pebblesnailThe Savannah pebblesnail is a species of gastropod in the Hydrobiidae family. It is endemic to the United States.-Source:* Mollusc Specialist Group 1996. .* Downloaded on 7 August 2007....
, Somatogyrus tenax - Opaque pebblesnailOpaque pebblesnailThe opaque pebblesnail, scientific name Somatogyrus tennesseensis, is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. The natural habitat of this species is...
, Somatogyrus tennesseensis - Panhandle pebblesnailPanhandle pebblesnailThe Panhandle pebblesnail, scientific name Somatogyrus virginicus, is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. Its natural habitat is rivers. It is threatened by...
, Somatogyrus virginicus - Channeled pebblesnailChanneled pebblesnailThe channeled pebblesnail, scientific name †Somatogyrus wheeleri, was a species of very small freshwater and brackish water snails that have an operculum, aquatic gastropod mollusks in the family Hydrobiidae....
, Somatogyrus wheeleri