Gastropoda
      Heterobranchia
            Pulmonata
                  Stylommatophora
                              Zonitoidea
                                    Daudebardiidae
                                    Gastrodontidae
                                    Godwiniidae
                                    Limacidae
                                    Milacidae
                                    Oxychilidae
                                    Parmacellidae
                                    Pristilomatidae
                                    Vitrinidae
                                    Zonitidae