Granite pebblesnail

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 Lithoglyphidae.

This species is endemic to Alabama in the United States. Its natural habit is the Coosa and Tallapoosa Rivers, but it has not been collected since these rivers were impounded.