[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryotes see Domain Eukaryota Chatton, 1925
     Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
       Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
         Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
           Phylum Chordata Bateson, 1885 - chordates
             Subphylum Vertebrata Cuvier, 1812 - vertebrates
               Infraphylum Gnathostomata Gegenbaur, 1874 - jawed vertebrates see Superclass Gnathostomata Gegenbaur, 1874
                 Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
                   Subclass Sarcopterygii Romer, 1955 see Clade Sarcopterygii Romer, 1955
                     Infraclass Crossopterygii Huxley, 1861
                       Infraclass Tetrapodomorpha Ahlberg, 1991 see [unranked] Tetrapodomorpha Ahlberg, 1991
                         Superorder Osteolepidida Boulenger, 1901 see [unranked] Osteolepidimorpha
                           Superclass Tetrapoda Goodrich, 1930 - tetrapods see Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
                             Class Unnamed
                               Superorder Reptiliomorpha Säve-Söderbergh, 1934 see [unranked] Reptiliomorpha Säve-Söderbergh, 1934
                                 Batrachosauria
                                   Series Amniota Haeckel, 1866 see Clade Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988]
                                     Class Sauropsida Huxley, 1864 see Clade Reptilia Linnaeus 1758 [Gauthier, Kluge & Rowe 1988], nom. cl. inval.
                                       Subclass Diapsida Osborn, 1903 - diapsids see Clade Diapsida Osborn 1903 [Gauthier & de Queiroz 2020]
                                         Neodiapsida Benton 1985
                                           Infraclass Archosauromorpha Huene, 1946 see Clade Archosauromorpha Huene 1946 [Benton 1985], nom. cl. inval.
                                             Division Archosauria Cope, 1869 see Clade Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval.
                                               Avesuchia Benton, 1999 see Clade Archosauria Cope 1869 [Gauthier & Padian 1985], nom. cl. inval.
                                                 Subdivision Avemetatarsalia Benton, 1999 see Clade Avemetatarsalia Benton 1999
                                                   Infradivision Ornithodira Gauthier, 1986 see Clade Ornithodira Gauthier 1986
                                                     Dinosauromorpha Benton 1985 [Sereno 1991], nom. cl. inval. see Clade Dinosauromorpha Benton 1985 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                       Dinosauriformes Novas 1992, nom. cl. inval. see Clade Dinosauriformes Novas 1992 [M. Ezcurra, S. Nesbitt, M. Bronzati, F. Dalla Vecchia, F. Agnolin, R. Benson, ..., M. Langer 2020]
                                                         Superorder Dinosauria Owen, 1841 - dinosaurs see Clade Dinosauria Owen 1842 [Langer, Novas, Bittencourt, Ezcurra & Gauthier 2020]
                                                           Order Saurischia Seeley, 1887 see Clade Saurischia Seeley 1888 [Gauthier, Langer, Novas, Bittencourt & Ezcurra 2020]
                                                             Suborder Theropoda Marsh, 1881 see Clade Theropoda Marsh 1881 [Naish, Cau, Holtz Jr., Fabbri & Gauthier 2020]
                                                               Infraorder Tetanurae Gauthier, 1986 see Clade Tetanurae Gauthier 1986
                                                                 Division Coelurosauria Huene, 1914 see Clade Coelurosauria Huene 1914 [Gauthier 1986]
                                                                   Subdivision Maniraptoriformes Holtz, 1996 see Clade Maniraptoriformes Holtz 1995 [Holtz 1996]
                                                                     Infradivision Maniraptora Gauthier, 1986 see Clade Maniraptora Gauthier 1986
                                                                       Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
                                                                         Subclass Pygostylia Chiappe, 2002 see Clade Pygostylia Chatterjee 1997 [Chiappe 2001]
                                                                           Infraclass Ornithothoraces Chiappe, 1995 see Clade Ornithothoraces Chiappe 1995
                                                                             Supercohort Ornithomorpha nom. null. see Supercohort Ornithuromorpha Chiappe, 2002
                                                                               Cohort Ornithurae Haeckel, 1866 see Clade Ornithurae Haeckel 1866 [Gauthier 1986] {Chiappe 1991}
                                                                                 Subcohort Carinatae Merrem, 1813 see Clade Carinatae Merrem 1813 [Gauthier & de Queiroz 2001]
                                                                                   Superdivision Neornithes Gadow, 1893 see Subclass Neornithes Gadow, 1893
                                                                                     Division Palaeognathae Pycraft, 1900 see Cohort Palaeognathae Pycraft, 1900
                                                                                       Order †Lithornithiformes Houde, 1988
                                                                                         1 Genus †Lithornis Owen, 1840
                                                                                         2 Genus †Palaeotis Lambrecht, 1928
                                                                                         3 Genus †Paracathartes Harrison, 1979