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Organism
  Animalia
      Mollusca
            Gastropoda
              Heterobranchia
                Euthyneura
                 Tectipleura
                  Eupulmonata
                    Stylommatophora
                      Helicina
                          Urocoptoidea
                            Cerionidae
                                     Cerion
                                             Cerion casablancae
                                             Cerion columna
                                             Cerion incanum
                                                   [Cerion incanum fasciatum]
                                                   [Cerion incanum saccharimeta]
                                             Cerion mumia
                                               Cerion mumia chrysalis
                                                     [Cerion chrysalis]
                                             Cerion ritchiei
                                             Cerion striatellum
                                                   [Cerion crassilabris]
                                             Cerion tridentatum