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Organism
  Animalia
      Mollusca
            Gastropoda
              Heterobranchia
                Euthyneura
                 Tectipleura
                  Eupulmonata
                    Stylommatophora
                      Helicina
                        Pupilloidei
                          Chondrinoidea
                            Truncatellinidae
                                     Columella
                                             Columella simplex