[Animalia] Linnaeus, 1758 - animals
   Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Bilateralia
         Chordata Bateson, 1885 - chordates
           Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
             Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
               Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                 Psittaciformes Wagler, 1830 - parrots
                   Psittacidae Illiger, 1811 - cockatoos and parrots
                     Trichoglossinae see Family Loriinidae Selby, 1836
                       Psittaculirostrini see Tribe Cyclopsittini
                         1 Psittaculirostris Gray & Gray, 1859
                         2 Opopsitta Sclater, 1860 see Genus Cyclopsitta Reichenbach, 1850