living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         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
                 Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
                   Order Galliformes Temminck, 1820 - fowl
                     1 Family "Megapodidae" see Family Megapodiidae Lesson, 1831
                     1 Family Megapodiidae Lesson, 1831 - megapodes
                     2 Family Cracidae Vigors, 1825 - chachalacas, curassows, guans
                     3 Family Tetraonidae Vigors, 1825
                     4 Family Phasianidae Vigors, 1825 - turkeys, grouse, pheasants, partridges
                     5 Family Numididae Reichenbach, 1850 - guineafowl see Subfamily Numidinae Reichenbach, 1850
                     6 Family Meleagridae Gray, 1840 see Family Meleagrididae Gray, 1840