[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Branch Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
       Division Bilateria Hatschek, 1888 see Subkingdom Bilateria Hatschek, 1888
         Subdivision Deuterostomia Grobben, 1908 see Infrakingdom Deuterostomia Grobben, 1908
           Phylum Chordata Bateson, 1885 - chordates
             Subphylum Vertebrata Cuvier, 1812 - vertebrates
               Superclass Tetrapoda Goodrich, 1930 - tetrapods see Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
                 Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
                   Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
                     Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
                       01 Order Tinamiformes Huxley, 1872
                       02 Order Rheiformes Forbes, 1884 see Suborder Rheae Forbes, 1884
                       03 Order Struthioniformes Latham, 1790
                       04 Order Casuariiformes Sclater, 1880
                       05 Order †Aepyornithiformes Newton, 1884
                       06 Order Dinornithiformes
                       07 Order Podicipediformes Fürbringer, 1888
                       08 Order Sphenisciformes Sharpe, 1891
                       09 Order Procellariiformes Fürbringer, 1888
                       10 Order Pelecaniformes Sharpe, 1891
                       11 Order Anseriformes Wagler, 1831 - waterfowl and screamers
                       12 Order Ciconiiformes Bonaparte, 1854
                       13 Order Falconiformes Sharpe, 1874
                       14 Order Galliformes Temminck, 1820 - fowl
                       15 Order Gruiformes Bonaparte, 1854
                       16 Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks