living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Theria Parker & Haswell, 1897
                 Infraclass Eutheria Gill, 1872
                   Order Primates Linnaeus, 1758 - primates
                     Suborder Haplorhini Pocock, 1918
                       Infraorder Catarrhini Geoffroy Saint-Hilaire, 1812 see Parvorder Catarrhini Geoffroy Saint-Hilaire, 1812
                         Family Cercopithecidae Gray, 1821 - Old World monkeys
                           Subfamily Colobinae Jerdon, 1867
                             1 Genus Presbytis Eschscholtz, 1821 - leaf monkeys
                             2 Genus Pygathrix Geoffroy Saint-Hilaire, 1812 - douc langurs
                             3 Genus Rhinopithecus Milne-Edwards, 1872 - snub-nosed langurs
                             4 Genus Simias Miller, 1903 - pig-tailed langur
                             5 Genus Nasalis Geoffroy Saint-Hilaire, 1812 - proboscis monkey
                             6 Genus Colobus Illiger, 1811 - black and white colobus monkeys