Abyssochrysoidea
                                    Provannidae
                  Architaenioglossa
                              Cyclophoroidea
                                    Aciculidae
                                    Cyclophoridae
                                    Diplommatinidae
                                    Liareidae
                                    Maizaniidae
                                    Megalomastomatidae
                                    Neocyclotidae
                                    Pupinidae
                              Viviparoidea
                                    Ampullariidae
                                    Viviparidae
                  Neogastropoda
                              Buccinoidea
                                    Babyloniidae
                                    Belomitridae
                                    Buccinidae
                                    Colubrariidae
                                    Columbellidae
                                    Fasciolariidae
                                    Melongenidae
                                    Nassariidae
                              Cancellarioidea
                                    Cancellariidae
                              Conoidea
                                    Borsoniidae
                                    Clathurellidae
                                    Clavatulidae
                                    Cochlespiridae
                                    Conidae
                                    Conorbidae
                                    Drilliidae
                                    Horaiclavidae
                                    Mangeliidae
                                    Mitromorphidae
                                    Pseudomelatomidae
                                    Raphitomidae
                                    Strictispiridae
                                    Terebridae
                                    Turridae
                              Mitroidea
                                    Mitridae
                              Muricoidea
                                    Costellariidae
                                    Cystiscidae
                                    Harpidae
                                    Marginellidae
                                    Muricidae
                                    Pleioptygmatidae
                                    Turbinellidae
                                    Volutidae
                                    Volutomitridae
                              Olivoidea
                                    Olividae
                              Pseudolivoidea
                                    Pseudolividae
                                    Ptychatractidae
                  Neotaenioglossa
                                    Abyssochrysidae
                              Calyptraeoidea
                                    Calyptraeidae
                                    Capulidae
                              Campaniloidea
                                    Ampullinidae
                                    Campanilidae
                                    Plesiotrochidae
                              Cerithioidea
                                    Batillariidae
                                    Cerithiidae
                                    Dialidae
                                    Diastomatidae
                                    Litiopidae
                                    Melanopsidae
                                    Modulidae
                                    Pachychilidae
                                    Paludomidae
                                    Planaxidae
                                    Pleuroceridae
                                    Potamididae
                                    Scaliolidae
                                    Semisulcospiridae
                                    Siliquariidae
                                    Thiaridae
                                    Turritellidae
                              Cingulopsoidea
                                    Cingulopsidae
                                    Eatoniellidae
                              Cypraeoidea
                                    Cypraeidae
                                    Ovulidae
                              Littorinoidea
                                    Annulariidae
                                    Littorinidae
                                    Pelycidiidae
                                    Pickworthiidae
                                    Pomatiidae
                                    Skeneopsidae
                              Naticoidea
                                    Naticidae
                              Pterotracheoidea
                                    Atlantidae
                                    Carinariidae
                                    Pterotracheidae
                              Rissooidea
                                    Amnicolidae
                                    Anabathridae
                                    Assimineidae
                                    Barleeiidae
                                    Bithyniidae
                                    Caecidae
                                    Elachisinidae
                                    Emblandidae
                                    Epigridae
                                    Falsicingulidae
                                    Hydrobiidae
                                    Hydrococcidae
                                    Iravadiidae
                                    Pomatiopsidae
                                    Rissoidae
                                    Stenothyridae
                                    Tornidae
                                    Truncatellidae
                              Stromboidea
                                    Aporrhaidae
                                    Colombellinidae
                                    Rostellariidae
                                    Seraphsidae
                                    Strombidae
                                    Struthiolariidae
                              Tonnoidea
                                    Bursidae
                                    Cassidae
                                    Ficidae
                                    Laubierinidae
                                    Personidae
                                    Pisanianuridae
                                    Ranellidae
                                    Tonnidae
                              Vanikoroidea
                                    Hipponicidae
                                    Vanikoridae
                              Velutinoidea
                                    Triviidae
                                    Velutinidae
                              Vermetoidea
                                    Vermetidae
                              Xenophoroidea
                                    Xenophoridae
                  Ptenoglossa
                              Epitonioidea
                                    Epitoniidae
                                    Janthinidae
                                    Nystiellidae
                              Eulimoidea
                                    Aclididae
                                    Eulimidae
                              Triphoroidea
                                    Cerithiopsidae
                                    Newtoniellidae
                                    Triphoridae