[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 Synapsida Osborn, 1903 see Clade Synapsida Osborn 1903 [Gauthier et al. 1989]
                                       Order Therapsida Broom, 1905 see [unranked] Therapsida Broom, 1905
                                         Theriodontia
                                           Suborder Cynodontia Owen, 1861 - cynodonts see Clade Cynodontia Owen 1861 [Gauthier, Kluge & Rowe 1988]
                                             Eucynodontia Kemp 1982 [Rowe 1993]
                                               Class Mammalia Linnaeus, 1758 - mammals
                                                 Subclass Mammaliaformes Rowe, 1988 see Clade Mammaliaformes Rowe 1988
                                                   Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
                                                     Superdivision Theriimorpha see Clade Theriimorpha Rowe 1993
                                                       Division Theriiformes Rowe, 1988 see Clade Theriiformes Rowe 1988
                                                         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
                                                           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
                                                             Prototribosphenida Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
                                                               Sublegion Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001
                                                                 Infralegion Theria Parker & Haswell, 1897 see Subclass Theria Parker & Haswell, 1897
                                                                   Cohort Marsupialia Jameson, 1818 - marsupials
                                                                     Magnorder Ameridelphia Szalay, 1982 see Clade Ameridelphia Szalay 1982
                                                                       Order †Sparassodonta Ameghino, 1894
                                                                         1 Family †Borhyaenidae Ameghino, 1894
                                                                         2 Family †Thylacosmilidae Riggs, 1933