Mammaliaformes Rowe 1988 [nom. cl. nov.]
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes (Rowe, 1988) M.C. McKenna & S.K. Bell, 1997 see Division Theriiformes
       Infraclass Holotheria (Wible et al., 1995) M.C. McKenna & S.K. Bell, 1997 see [unranked] Holotheria
         Superlegion Trechnotheria McKenna, 1975 see [unranked] Trechnotheria McKenna, 1975
           Legion Cladotheria McKenna, 1975 see [unranked] Cladotheria McKenna, 1975
             Sublegion Zatheria McKenna, 1975 see [unranked] Zatheria McKenna, 1975
               Infralegion Tribosphenida McKenna, 1975 see Sublegion Boreosphenida
                 Supercohort Theria Parker & Haswell, 1897 - therians see Clade Theria Parker & Haswell, 1897
                   01 Genus †Anisorhizus Ameghino, 1902
                   02 Genus †Tetraprothomo Ameghino, 1907
                   03 Genus †Tribotherium Sigogneau-Russell, 1991
                   04 Genus †Zygiocuspis Cifelli, 1990
                   05 Genus †Falepetrus Clemens & Lillegraven, 1986
                   06 Genus †Dakotadens Eaton, 1993
                   07 Genus †Aethomylos Novacek, 1976
                   08 Genus †Kasserinotherium Crochet, 1986
                   09 Genus †Paleomolops Cifelli, 1994
                   10 Subfamily †Russellmyinae Estravis, 1990
                   11 Family †Pappotheriidae Slaughter, 1965
                   12 Family †Holoclemensiidae Aplin & Archer, 1987
                   13 Family †Kermackiidae Butler, 1978
                   14 Family †Endotheriidae Shikama, 1947
                   15 Family †Picopsidae Fox, 1980
                   16 Family †Potamotelsidae Nessov, 1987, nom. nud.
                   17 Family †Plicatodontidae Ameghino, 1904
                   18 Order †Deltatheroida Kielan-Jaworowska, 1982
                   19 Order †Asiadelphia Trofimov & Szalay, 1993
                   20 Cohort Marsupialia Illiger, 1811 - marsupials
                   21 Cohort Placentalia (Owen, 1837) M.C. McKenna & S.K. Bell, 1997 - placentals