Tallapoosa pebblesnail
 The Tallapoosa pebblesnail scientific name Somatogyrus pilsbryanus 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. The common name of this pebblesnail refers to the Tallapoosa River which runs through the states of Georgia and Alabama.