organisms
see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
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Eukaryota Chatton, 1925 - eukaryotes
see Domain Eukaryota Chatton, 1925
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Kingdom Animalia Linnaeus, 1758 - animals
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Deuterostomia Grobben, 1908 - deuterostomes
see Infrakingdom Deuterostomia Grobben, 1908
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Phylum Chordata Bateson, 1885 - chordates
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Subphylum Vertebrata Cuvier, 1812 - vertebrates
see Infraphylum Vertebrata Lamarck, 1801
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Superclass Tetrapoda Goodrich, 1930 - tetrapods
see Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval.
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Class Aves Linnaeus, 1758 - birds
see Subclass Aves Linnaeus, 1758
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Subclass Neornithes Gadow, 1893
see Clade Neornithes Gadow, 1893
Count: [*] 27o1f6g16s; †5o
01 Order Tinamiformes Huxley, 1872
Count: -
02 Order †Palaeocursornithiformes Kessler & Jurcsák, 1986
Count: -
03 Order Struthioniformes Latham, 1790
Count: -
04 Order Rheiformes Forbes, 1884
see Suborder Rheae Forbes, 1884
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05 Order Casuariiformes Sclater, 1880
Count: -
06 Order †Dinornithiformes Gadow, 1893 - moas
Count: -
07 Order †Aepyornithiformes Newton, 1884
Count: -
08 Order Apterygiformes Haeckel, 1866
Count: -
09 Order Galliformes Temminck, 1820 - fowl
Count: -
10 Order Anseriformes Wagler, 1831 - waterfowl and screamers
Count: -
11 Order Strigiformes Wagler, 1830 - owls
Count: -
12 Order Coraciiformes Forbes, 1884 - rollerlike birds
Count: -
13 Order †Sandcoleiformes Houde & Olson, 1992
Count: -
14 Order Coliiformes Murie, 1872 - mousebirds
Count: -
15 Order Piciformes Meyer & Wolf, 1810 - scansorial birds
Count: -
16 Order Passeriformes Linnaeus, 1758
Count: -
17 Order Apodiformes Peters, 1940 - swifts
Count: -
18 Order Caprimulgiformes Ridgway, 1881 - nightjars
Count: -
19 Order Trogoniformes Wetmore & Miller, 1926 - trogons
Count: -
20 Order Cuculiformes Wagler, 1830 - cuckoos and plantain-eaters
Count: -
21 Order Psittaciformes Wagler, 1830 - parrots
Count: -
22 Order †Diatrymiformes Shufeldt, 1913
Count: -
23 Order Gruiformes Bonaparte, 1854
Count: -
24 Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
Count: -
25 Order Columbiformes Latham, 1790 - pigeons and allies
Count: -
26 Order Falconiformes Sharpe, 1874
Count: -
27 Order Ciconiiformes Bonaparte, 1854
Count: -
28 Order Podicipediformes Fürbringer, 1888
Count: -
29 Order Pelecaniformes Sharpe, 1891
Count: -
30 Order Procellariiformes Fürbringer, 1888
Count: -
31 Order Sphenisciformes Sharpe, 1891
Count: -
32 Order Gaviiformes Wetmore & Miller, 1926
Count: -