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 Atelidae Gray, 1825
               Subfamily Atelinae Gray, 1825
                 Genus Lagothrix Geoffroy, 1812 - woolly monkeys
                   1 Lagothrix cana (É. Geoffroy, 1812)
                   2 Lagothrix lagotricha (Humboldt, 1812)
                   3 Lagothrix lugens Elliot, 1907
                   4 Lagothrix poeppigii Schinz, 1844