Mammaliaformes Rowe 1988
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Cohort Placentalia Owen, 1837 - placentals
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Superorder Preptotheria McKenna, 1975
                         Grandorder Ungulata Linnaeus, 1766
                           Mirorder †Meridiungulata McKenna, 1975 - South American ungulates see Grandorder Meridiungulata McKenna, 1975
                             01 Genus †Andinodus de Muizon & Marshall, 1987
                             02 Genus †Anagonia Ameghino, 1904, nom. dub.
                             03 Genus †Lambdaconus Ameghino, 1897
                             04 Genus †Prostylophorus Roth, 1902, nom. dub.
                             05 Genus †Trilobodon Roth, 1902
                             06 Genus †Heterolophodon Roth, 1903
                             07 Genus †Acamana Simpson, Minoprio & Patterson, 1962
                             08 Family †Perutheriidae Van Valen, 1978
                             09 Family †Amilnedwardsiidae Soria, 1984
                             10 Order †Litopterna Ameghino, 1889
                             11 Order †Notoungulata Roth, 1903
                             12 Order †Astrapotheria Lydekker, 1894
                             13 Order †Xenungulata Paula Couto, 1952
                             14 Order †Pyrotheria Ameghino, 1895