Kingdom [Animalia] Linnaeus, 1758 - animals
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Vertebrata Cuvier, 1812 - vertebrates
       Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
         Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
           1 Superorder †Odontognathae Wetmore, 1930 see Subclass Archaeornithes Gadow, 1893
           2 Superorder Palaeognathae Pycraft, 1900 see Cohort Palaeognathae Pycraft, 1900
           3 Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900