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Organism
  Animalia
      Cnidaria
            Hydrozoa
              Hydroidolina
                     [Hydroida]
                    Anthoathecata
                      Filifera
                            Cordylophoridae
                                     Cordylophora
                                             Cordylophora caspia
                                                   [Cordylophora lacustris]
                                     Corydendrium
                                             Corydendrium parasiticum