life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - 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
         Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
           Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
             Chordata Bateson, 1885 - chordates
               Vertebrata Cuvier, 1812 - vertebrates
                 Gnathostomata Gegenbaur, 1874 - jawed vertebrates see Superclass Gnathostomata Gegenbaur, 1874
                   Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi
                     Sarcopterygii Romer, 1955 see Clade Sarcopterygii Romer, 1955
                       †Tetrapodomorpha Ahlberg, 1991 see [unranked] Tetrapodomorpha Ahlberg, 1991
                         Tetrapoda Goodrich, 1930 - tetrapods see Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
                           Neotetrapoda
                             Reptiliomorpha Säve-Söderbergh, 1934 see [unranked] Reptiliomorpha Säve-Söderbergh, 1934
                               Unnamed
                                 Amniota Haeckel, 1866 see Clade Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988]
                                   Synapsida Osborn, 1903 see Clade Synapsida Osborn 1903 [Gauthier et al. 1989]
                                     Unnamed
                                       Unnamed
                                         †Therapsida Broom, 1905 see [unranked] Therapsida Broom, 1905
                                           †Cynodontia Owen, 1861 - cynodonts see Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988]
                                             Probainognathia see [unranked] Probainognathia Hopson, 1990
                                               Mammaliamorpha see Clade Mammaliamorpha Rowe 1988
                                                 Mammalia Linnaeus, 1758 - mammals
                                                   Mammalia
                                                     Theriimorpha see Clade Theriimorpha Rowe 1993
                                                       Theriiformes Rowe, 1988 see Clade Theriiformes Rowe 1988
                                                         Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
                                                           Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
                                                             Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001
                                                               Theria Parker & Haswell, 1897 see Subclass Theria Parker & Haswell, 1897
                                                                 Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
                                                                   Placentalia Owen, 1837 - placentals
                                                                     Boreoeutheria Springer & de Jong, 2001 see Magnorder Boreoeutheria Springer & de Jong, 2001
                                                                       Laurasiatheria Waddell, Okada & Hasegawa, 1999 see Superorder Laurasiatheria Waddell, Okada & Hasegawa, 1999
                                                                         Scrotifera Waddell, Cao, Hauf & Hasegawa, 1999 see Clade Scrotifera Waddell, Cao, Hauf & Hasegawa 1999
                                                                           †"Condylarthra" Cope, 1881 see Order Condylarthra Cope, 1881
                                                                             1 †Hyopsodontidae Trouessart, 1879
                                                                             2 †Phenacodontidae Cope, 1881