After McKenna & Bell, 1997, and Prothero, 2015, with Recent species from Nowak, 1991

<==o Tayassuidae Palmer, 1897 [Dicotylina Turner, 1849; Dicotylidae Gray, 1868] [incl. Cynorcidae Cope, 1867] (peccaries; pekarit)
   |?- †Odoichoerus uniconus Tong & Zhao, 1986 [treated as basal Suoidea by Liu]
   |--o †Doliochoerinae Simpson, 1945 (eurasian peccarines)
   |  `--o †Doliochoerini Simpson, 1945 [Doliochoerini Pickford, 1986] [incl. Doliochoerinae Simpson, 1945]
   |     |-- †Doliochoerus Filhol, 1882; Olig. SEu.
   |     |--o †Albanohyus Ginsburg, 1974
   |     |  |-- †A. pygmaeus
   |     |  `-- †A. castellensis
   |     |--o †Pecarichoerus Colbert, 1933
   |     |  |-- †P. orientalis Colbert, 1933
   |     |  `-- †P. africanus Headey, 1976
   |     `-- †Barberahyus Golpe-Posse, 1977
   `--+--o †Hesperhyinae Prothero, 2015 (sensu Wright, 1991, 1998 (Prothero, 2015))
      |  |-- †Lucashyus coombsae Prothero, 2015
      |  |-- †Marshochoerus socialis (Marsh, 1875) Prothero, 2015 [Thinohyus socialis Marsh, 1875; Palaeochoerus socialis Cope, 1879; Thinohyus socialis Stehlin, 1899, Sinclair, 1905; Thinohyus (Bothrolabis) socialis Merriam & Sinclair, 1907; Perchoerus socialis Matthew, 1909; Cynorca sociale Woodburne, 1969; “Cynorcasociale Wright, 1991, 1998]
      |  `--+-- †Floridachoerus olseni White, 1941 [Hesperhys Douglass, 1903 (in partem); Desmathyus olseni Olsen, 1962, MacFadden & Webb, 1982]
      |     |-- †Stuckyhyus siouxensis (Peterson, 1905) Prothero, 2015 [Thinohyus (Bothrolabis) siouxensis Peterson, 1905; Desmathyus siouxensis Matthew, 1907, Pearson, 1923; “Thinohyussiouxensis Wright, 1991, 1998]
      |     `--+-- †Wrightohyus yatkolai Prothero, 2015 [Hesperhys cf. Hesperhys pinensis Wright, 1991]
      |        `--+-- †Desmathyus pinensis Matthew, 1907 [Hesperhys pinensis Simpson, 1945, McKenna & Bell, 1997, Wright, 1991, Wright, 1998 (in partem), Albright, 1999; Desmahyus Carroll, 1988 (lapsus calami)]
      |           `-- †Hesperhys vagrans Douglass, 1903 [Desmathyus validus Matthew, 1924; Pediohyus Loomis, 1910]; E.Mioc.-E.Plioc. NAm.
      `--o Tayassuinae Palmer, 1897 [Dicotylinae Leidy, 1853; Tayassuidae Palmer, 1897; Tayassuinae Hay, 1902] [incl. Cynorcidae Cope, 1867] (peccarines; pekarit)
         |-- †Egatochoerus jaegeri Ducrocq, 1994; L.Eoc. SEAs.
         |?- †Perchoerus Leidy, 1869 [Bothrolabis Cope, 1888] L.Eoc.-E.Mioc. NAm.
         |?- †Thinohyus Marsh, 1875; E.Olig.-E.Mioc. NAm.
         |-- †Chaenohyus decedens Cope, 1879; E.Mioc. NAm.
         |--o †Cynorca Cope, 1867 [incl.? Thinotherium Cope, 1870]; E.-M.Mioc. NAm.
         |  |-- †C. proterva Cope 1868
         |  |-- †C. hesperia Marsh 1871
         |  `-- †C. occidentale Woodburne, 1969
         |--o †Dyseohyus Stock, 1937; E.-M., ?L.Mioc.; NAm.
         |  `-- †D. stirtoni Woodburne, 1969 [=? Prosthennops xiphodonticus Barbour, 1925]
         |-- †Macrogenis crassigenis (Gidley, 1904) Matthew, 1924 [=? Prosthennops]
         |--o †Prosthennops Gidley, in Matthew & Gidley, 1904
         |  |-- †“P.” oregonensis Colbert, 1938
         |  |-- †“P.” elmorei
         |  |-- †“P.” niobrarensis Colbert, 1935
         |  |-- †P. serus Cope, 1877 [Prosthennops graffhami Schultz & Martin, 1975]
         |  `-- †P. xiphodonticus Barbour, 1925
         |--o †Platygonus LeConte, 1848 [Hyops LeConte, 1848; Protochoerus LeConte, 1848; Euchoerus Leidy, 1853; Coyametla Duges, 1887] [incl. Antaodon Ameghino, 1886; Parachoerus Rusconi, 1930; Selenogonus Stirton, 1947 (Tayassuinae incertae sedis)] (flat-headed peccaries)
         |  |-- †P. compressus LeConte, 1848 [type]
         |  |-- †P. vetus Leidy, 1882 [P. cumberlandensis]
         |  |-- †P. bicalcaratus Cope, 1892
         |  |-- †P. rex Marsh, 1894
         |  |-- †P. pearcei Gazin, 1938
         |  `-- †P. pollenae Prothero & Grenader, 2012
         |--o †Mylohyus Cope, 1889 (long-nosed peccaries)
         |  |-- †M. elmorei [=? “Prosthennops” elmorei]
         |  |-- †M. floridanus
         |  `-- †M. nasutus
         |--+?- †Sylvochoerus woodburnei Frailey & Campbell, 2012
         |  |?- †Waldochoerus bassleri Frailey & Campbell, 2012
         |  |--o Tayassu G. Fischer de Waldheim, 1814 [Notophorus Fischer de Waldheim, 1817; Tayassus Trouessart, 1905] [incl. Dicodyles Cuvier, 1817; Adenonotus Brookes, 1828; Pecari Reichenbach, 1835; Mamdicotylesus Herrera, 1899] (kauluspekarit)
         |  |  |-- †T. edensis Frick, 1921 [Prosthennops edensis]
         |  |  |-- †T. niger Allen, 1913
         |  |  `-- T. pecari (Link, 1795) (white-lipped peccary; huulipekari)
         |  `--o Pecari Reichenbach, 1835
         |     |?- †P. traunmulleri [Dicotyles traunmulleri]
         |     |-- P. tajacu (Linnaeus, 1758) (collared peccary; kauluspekari)
         |     `?- P. maximus Van Roosmalen, Frenz, Van Hooft, De Iongh & Leirs, 2007 (giant peccary)
         |-- †Argyrohyus Kraglievich, 1959
         |--o Catagonus Ameghino, 1904 [incl. Interchoerus Rusconi, 1930]
         |  |-- †C. stenocephalus (Lund, in Reinhardt, 1880)
         |  |-- †C. brachydontus Dalquest & Mooser, 1980
         |  `-- C. wagneri (Rusconi, 1948) (Roman-nosed peccary; chaconpekari)
         `-- †Brasiliochoerus Rusconi, 1930

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