| Mud pebblesnail | |
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| Species: | S. sargenti |
| Binomial name | |
| Somatogyrus sargenti Pilsbry, 1895 | |
The 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.
The reverse pebblesnail, scientific name Somatogyrus alcoviensis, is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Hydrobiidae.
Somatogyrus is a genus of very small freshwater and brackish water snails that have an operculum, aquatic gastropod mollusks in the family Hydrobiidae.
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.
The angular pebblesnail, scientific name Somatogyrus biangulatus, is a species of very small freshwater snail with an operculum, an aquatic operculate gastropod mollusk in the Hydrobiidae family. This species is endemic to the United States. Its natural habitat is rivers. This snail is only located in specific freshwater cave environments and has not been extensively studied.
The knotty pebblesnail, scientific name Somatogyrus constrictus, of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae. The taxonomic validity of this species has been questioned; it may represent morphological aberrations of other, valid species. If it is a valid species, it would be assessed as threatened.
The 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. This species was endemic to the United States. Its natural habitat was rivers. It is now extinct.
The stocky pebblesnail is a species of very small 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.
The Tennessee pebblesnail is a species of very small freshwater snail with an operculum. It is an aquatic gastropod mollusc in the family Hydrobiidae.
The 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 Alabama in the United States. Its natural habitat is rivers.
The 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.
The 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.
The dwarf pebblesnail is a species of very small or minute freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The Moon pebblesnail, scientific name Somatogyrus obtusus, is a species of very small freshwater snail that has an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
The sparrow pebblesnail, scientific name Somatogyrus parvulus, 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.
The 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.
The quadrate pebblesnail, scientific name Somatogyrus quadratus, is a species of small 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. This species is possibly extinct because there is no recent survey information. It is known to have had a very restricted distribution and there had been a habitat disturbance. This species was endemic to the Tennessee River system and was known to exist from Muscle Shoals and adjacent Shoal Creek, Lauderdale County, Alabama. It has not been reported since the river was impounded. Based on the fact that the species has not been observed since the dams were constructed, it is widely believed that that change in habitat possibly caused the species's extinction.
The rolling pebblesnail scientific name Somatogyrus strengi, is a species of 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.
The Savannah pebblesnail, scientific name Somatogyrus tenax, is a species of freshwater snail, an aquatic gastropod mollusk in the family Hydrobiidae. This species is endemic to the United States. Somatogyrus tenax may actually be a junior synonym of Somatogyrus virginicus, although the taxonomy remains in dispute.
The 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 rivers.
The 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, where it prefers areas with the fastest current.
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