Cochliopidae
Cochliopidae is a family of small freshwater snails with gills and an operculum, aquatic gastropod mollusks. Paludestrina is an archaic synonym, and has been placed on the Official Index of Rejected and Invalid Names by ICZN Opinion 2202. This family is in the superfamily Truncatelloidea and in the order Littorinimorpha (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Description. Cochliopidae snails are characterized by sharp, elongated spire-like structures, and can be found in rivers or brackish water. 2005 taxonomy. The family Cochliopidae consists of 3 subfamilies (according to the taxonomy of the Gastropoda by Bouchet  & Rocroi, 2005): Genera. Liu et al. (2001) have recognized 34 genera with more than 260 species within the subfamily Cochliopinae. Strong et al. (2008) have recognized 246 freshwater species within Cochliopidae. Genera within the family Cochliopidae include: subfamily Cochliopinae subfamily Littoridininae subfamily Semisalsinae - there are three genera in the subfamily Semisalsinae subfamily ? (either Cochliopinae or Littoridininae) Cladogram. A cladogram based on sequences of mitochondrial cytochrome-c oxidase I (COI) genes showing phylogenic relations of species within Cochliopidae: