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
                             Order †Astrapotheria Lydekker, 1894
                               Family †Astrapotheriidae Ameghino, 1887
                                 01 Genus †Scaglia Simpson, 1957
                                 02 Genus †Albertogaudrya Ameghino, 1901
                                 03 Genus †Astraponotus Ameghino, 1901
                                 04 Genus †Isolophodon Roth, 1903
                                 05 Genus †Xenastrapotherium Kraglievich, 1928
                                 06 Genus †Parastrapotherium Ameghino, 1895
                                 07 Genus †Uruguaytherium Kraglievich, 1928
                                 08 Genus †Astrapothericulus Ameghino, 1901
                                 09 Genus †Astrapotherium Burmeister, 1879
                                 10 Genus †Monoeidodon Roth, 1898