Taxon Search
Organism
  Animalia
    Bilateria
     Protostomia
     Lophozoa
      Mollusca
            Gastropoda
                   [Orthogastropoda]
              Opisthobranchia
                    Cephalaspidea
                            Retusidae
                                    Coleophysis
                                            Coleophysis carinata
                                            Coleophysis harpa
                                    Pyrunculus
                                            Pyrunculus caelatus
                                            Pyrunculus conulus
                                            Pyrunculus ovatus
                                    Retusa
                                            Retusa alba
                                            Retusa mayoi
                                            Retusa montereyensis
                                            Retusa obtusa
                                                   [Retusa pertenius]
                                              Retusa obtusa lajonkaireana
                                              Retusa obtusa obtusa
                                              Retusa obtusa turrita
                                            Retusa ovata
                                            Retusa semen
                                            Retusa sulcata
                                            Retusa truncatula
                                            Retusa turrita
                                            Retusa umbilicata
                                              Retusa umbilicata nitidula
                                              Retusa umbilicata umbilicata
                                            Retusa xystrum
                                                   [Sulcoretusa xystrum]
                                    Sulcoretusa
                                    Volvulella
                                           [Rhizorus]
                                            Volvulella acuminatus
                                                   [Rhizorus acuminatus]
                                            Volvulella californica
                                            Volvulella catharia
                                            Volvulella cylindrica
                                                   [Volvulella callicera]
                                            Volvulella panamica
                                            Volvulella paupercula
                                                   [Volvulella aspinosa]
                                            Volvulella persimilis
                                                   [Volvulella oxytata]
                                            Volvulella recta
                                            Volvulella texasiana