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 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.
The ovate pebblesnail, scientific name Somatogyrus excavatus, 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, and 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 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.
The 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.
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 Hydrobiidae. This species is endemic to the United States. The taxonomic status of S. aureus is unclear, as it is morphologically similar to other species. However, if it is a valid species, it would be assessed as critically endangered.
