Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
                 Order Primates Linnaeus, 1758 - primates
                   Suborder Simiae see Parvorder Anthropoidea Mivart, 1864
                     Infraorder Catarrhina see Superfamily Cercopithecoidea Gray, 1821
                       Superfamily Hominoidea Gray, 1825
                         Family Pongidae Elliot, 1913 - great apes see Subfamily Ponginae Elliot, 1913
                           Genus Pongo Lacépède, 1799 - orangutan
                             Pongo pygmaeus (C. Linnaeus, 1760) - orang-utan
                               1 Pongo pygmaeus pygmaeusᵀ (C. Linnaeus, 1760)
                               2 Pongo pygmaeus abeli Lesson, 1827 see Pongo pygmaeus abelii Lesson, 1827