After Begun, 2002, Chaimanee et al., 2003 and Chaimanee et al, 2004

<==o Pongidae Elliot, 1913 (orang-utans; orangutangit)
   |--o †Lufengpithecini
   |  `--o †Lufengpithecus Wu, 1987
   |     |-- †L. lufengensis (Xu et al., 1978)
   |     |-- †L. keiyuanensis (Woo, 1957)
   |     `-- †L. hudienensis Zhang et al., 1987
   `--+-- †Ankarapithecus meteai Ozansoy, 1965 [Sivapithecus]
      `--+--o †Sivapithecini
         |  |--o †Sivapithecus Pilgrim, 1910 [Ramapithecus]
         |  |  |?- †S. brevirostris [Ramapithecus brevirostris]
         |  |  |?- †S. punjabicus [Ramapithecus punjabicus]
         |  |  |-- †S. sivalensis Lydekker, 1879
         |  |  |-- †S. indicus Pilgrim, 1910
         |  |  `-- †S. parvada Kelley, 1988
         |  `--o †Gigantopithecus von Koenigswald, 1935
         |     |-- †G. giganteus (Pilgrim, 1915) [G. bilaspurensis]
         |     `-- †G. blacki von Koenigswald, 1935
         `--o Pongini Elliot, 1913
            |--o †Khoratpithecus Chaimanee, Suteethorn, Jintasakul, Vidthayanon, Marandat & Jaeger, 2004
            |  |-- †K. chiangmuanensis (Chaimanee, Jolly, Benammi, Tafforeau, Duzer, Moussa & Jaeger, 2003) [cf. Lufengpithecus chiangmuanensis Chaimanee, Jolly, Benammi, Tafforeau, Duzer, Moussa & Jaeger, 2003]
            |  `-- †K. piriyai Chaimanee, Suteethorn, Jintasakul, Vidthayanon, Marandat & Jaeger, 2004
            `--o Pongo pygmaeus Lacépède, 1799 (orang-utan; oranki)
               |-- P. p. pygmaeus (<>Borneo)
               `-- P. p. abelii (<>Sumatra)

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