After Schoch, 1989, Albright III, 1998 and Spassov & Ginsburg, 1999

<==o Tapiridae Burnett, 1830 (tapiirit)
   |--o †Nexuotapirus Albright, 1998 ["Nexuotapirinae"]
   |  |-- †N. marslandensis (Schoch & Prins, in Schoch, 1984) sensu Albright, 1998 [Miotapirus marslandensis Schoch & Prins, in Schoch, 1984; ?Miotapirus harrisonensis Schlaikjer, 1937 sensu McDonald, 1970]
   |  `-- †N. robustus (Sinclair, 1901) sensu Albright, 1998 [Protapirus robustus Sinclair, 1901]
   `--o "Tapirinae"
      |?- †Plesiocolopirus hancocki (Radinsky, 1963) Schoch, 1989b, in Prothero & Schoch, 1989 [Colodon? hancocki Radinsky, 1963]
      |--o †Protapirus Filhol, 1877
      |  |?- †P. bavaricus (Oettingen-Spielberg, 1952)
      |  |-- †P. simplex [incl. P. validus Hatcher, 1896]
      |  |-- †P. obliquidens Wortman & Earle, 1893
      |  `-- †P. priscus (Filhol, 1874) Filhol, 1877
      |-- †Eotapirus broennimani (Schaub & Hürzeler, 1948)
      |-- †Palaeotapirus Filhol, 1888
      |-- †Paratapirus intermedius (Filhol, 1885) Depéret, 1902
      |-- †Tapiravus validus (Marsh, 1871b) Marsh, 1877
      |-- †Megatapirus Matthew & Granger, 1923a
      |?- †Miotapirus harrisonensis Schlaikjer, 1937
      `--o Tapirus Brünnich, 1772 (nyky-tapiirit) [Synonyms]
         |?- †T. roulini
         |?-+-- †T. priscus (Kaup, 1833)
         |  |-- †T. balkanicus Spassov & Ginsburg, 1999
         |  |-- †T. jeanpiveteaui Boeuf, 1991
         |  `-- †T. arvernensis
         |?- †T. antiquus Kaup, 1833
         |?- †T. telleri Hofmann, 1893
         |?-o (Meyeriscus) Spassov & Ginsburg, 1999
         |  |-- †T. (M.) hungaricus H.V. Meyer, 1867
         |  `-- †T. (M.) pannonicus (Kretzoi, 1951) [Tapiriscus pannonicus Kretzoi, 1951]
         |-- T. (Tapirella) bairdii (bairdintapiiri)
         |-- T. (Acrocodia) indicus (intiantapiiri)
         `--o (Tapirus) Brünnich, 1772 (amerikantapiirit)
            |-- †T. (T.) haysii
            |-- †T. (T.) merriami
            |-- †T. (T.) californicus
            |-- †T. (T.) veroensis
            |-- T. (T.) terrestris (Linnaeus, 1758) Brünnich, 1772 (amerikantapiiri)
            `-- T. (T.) pinchaque (vuoritapiiri)

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