Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Primates Linnaeus, 1758 - primates
       Suborder Haplorrhini Pocock, 1918 see Suborder Haplorhini Pocock, 1918
         Infraorder Simiiformes Haeckel, 1866
           Parvorder Platyrrhini Geoffroy Saint-Hilaire, 1812
             Family Pitheciidae Mivart, 1865
               Subfamily Pitheciinae Mivart, 1865
                 Genus Cacajao Lesson, 1840 - uakaris
                   1 Cacajao calvus (I. Geoffroy Saint-Hilaire, 1847) - white uakari
                   2 Cacajao melanocephalus (Humboldt, 1812) - black-headed uakari