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Organism
  Animalia
      Chordata
        Vertebrata
          Amniota
            Aves
                    Passeriformes
                            Vireonidae
                                     Cyclarhis
                                             Cyclarhis gujanensis
                                             Cyclarhis nigrirostris
                                     Hylophilus
                                             Hylophilus olivaceus
                                     Pachysylvia
                                             Pachysylvia decurtata
                                             Pachysylvia hypoxantha
                                             Pachysylvia semibrunnea
                                     Tunchiornis
                                             Tunchiornis ochraceiceps
                                     Vireo
                                             Vireo flavoviridis
                                             Vireo leucophrys
                                             Vireo olivaceus
                                     Vireolanius
                                             Vireolanius leucotis