Gastropoda
      Caenogastropoda
                  Neotaenioglossa
                              Cerithioidea
                                    Batillariidae
                                    Cerithiidae
                                    Dialidae
                                    Diastomatidae
                                    Litiopidae
                                    Melanopsidae
                                    Modulidae
                                    Pachychilidae
                                    Paludomidae
                                    Planaxidae
                                    Pleuroceridae
                                    Potamididae
                                    Scaliolidae
                                    Semisulcospiridae
                                    Siliquariidae
                                    Thiaridae
                                    Turritellidae