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 Eparctocyona McKenna, 1975
                             Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
                               Suborder Suiformes Jaeckel, 1911 see Suborder Suina Gray, 1868
                                 Superfamily Suoidea Gray, 1821
                                   Family Tayassuidae Palmer, 1897 (1849) - peccaries
                                     Subfamily Tayassuinae Palmer, 1897
                                       01 Genus †Egatochoerus Ducrocq, 1994
                                       02 Genus †Perchoerus Leidy, 1869
                                       03 Genus †Thinohyus Marsh, 1875
                                       04 Genus †Hesperhys Douglass, 1903
                                       05 Genus †Chaenohyus Cope, 1879
                                       06 Genus †Cynorca Cope, 1867
                                       07 Genus †Dyseohyus Stock, 1937
                                       08 Genus †Prosthennops Gidley, 1904
                                       09 Genus †Platygonus Le Conte, 1848
                                       10 Genus †Mylohyus Cope, 1889
                                       11 Genus Tayassu Fischer de Waldheim, 1814 - collared and white-lipped peccaries
                                       12 Genus †Argyrohyus Kraglievich, 1959
                                       13 Genus Catagonus Ameghino, 1904 - Chacoan peccary
                                       14 Genus †Brasiliochoerus Rusconi, 1930