[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
                                                   1 Family †Morganucodontidae Kühne, 1958
                                                   2 Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995