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Organism
  Animalia
         [Metazoa]
      Mollusca
            Gastropoda
              Caenogastropoda
                Sorbeoconcha
                  Cerithiimorpha
                            Cryptaulacidae
                              Cryptaulacinae
                                     Cryptaulax
                                     Cryptoptyxis
                              Exelissinae
                                     Exelissa