Gastropoda
      Caenogastropoda
                  Neogastropoda
                              Buccinoidea
                                    Babyloniidae
                                    Belomitridae
                                    Buccinidae
                                    Colubrariidae
                                    Columbellidae
                                    Fasciolariidae
                                    Melongenidae
                                    Nassariidae