title: Coosa rocksnail
text: # Coosa rocksnail
  
  The Coosa rocksnail, scientific name †Leptoxis showalterii, also known as the "ribbed rocksnail", was a species of freshwater snails with an operculum, aquatic gastropod mollusks in the family Pleuroceridae.
  
  This species was endemic to the United States. It is now extinct.
  
  