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Organism
  Plantae
   Thallophyta
      Rhodophyta
             [Rhodophyceae]
             [Rhodophycota]
             [Rhodophytina]
        Cyanidiophytina
            Cyanidiophyceae
                    Cyanidiales
                            Cyanidiaceae
                                     Cyanidium
                                             Cyanidium caldarium