Order Primates Linnaeus, 1758 - primates
   Semiorder Euprimates Hoffstetter, 1978 see Clade Euprimates
     Suborder Haplorhini Pocock, 1918
       Hyporder Anthropoidea Mivart, 1864 see Infraorder Simiiformes Haeckel, 1866
         Infraorder Catarrhini Geoffroy Saint-Hilaire, 1812 see Parvorder Catarrhini Geoffroy Saint-Hilaire, 1812
           Parvorder Eucatarrhini Delson, 1977
             Superfamily Cercopithecoidea Gray, 1821 [monotypic]
               Family Cercopithecidae Gray, 1821 - Old World monkeys
                 Subfamily Colobinae Jerdon, 1867
                   Subtribe Presbytina Gray, 1825 see Tribe Presbytini Gray, 1825
                     Genus Nasalis Geoffroy Saint-Hilaire, 1812 - proboscis monkey
                       1 Subgenus Nasalis (Nasalis) Geoffroy Saint-Hilaire, 1812 see Genus Nasalis Geoffroy Saint-Hilaire, 1812
                       2 Subgenus Nasalis (Simias) Miller, 1903 see Genus Simias Miller, 1903