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 Alouattinae (Trouessart, 1897) Elliot, 1904
Genus Alouatta Lacépède, 1799 - howler monkeys
Alouatta guariba (Humboldt, 1812)
Alouatta guariba clamitans Cabrera, 1940