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 Cebidae Bonaparte, 1831 - New World monkeys
               Subfamily Callitrichinae Gray, 1821 see Family Callitrichidae Gray, 1821
                 Genus Callithrix Erxleben, 1777 - marmosets
                   Subgenus Cebuella Gray, 1866 see Genus Cebuella Gray, 1866