Infraorder Platyrrhini Geoffroy Saint-Hilaire, 1812 see Parvorder Platyrrhini Geoffroy Saint-Hilaire, 1812 Family Atelidae Gray, 1825 Subfamily Pitheciinae Mivart, 1865 Genus †Tremacebus Hershkovitz, 1974 †Tremacebus harringtoni (Rusconi, 1933)