Catarrhini
[4][7][8][9][10][6][11][12][13][14][excessive citations] That apes are monkeys was already realized by Georges-Louis Leclerc, Comte de Buffon in the 18th century.[3] Linnaeus placed this group in 1758 together with what we now recognise as the tarsiers and the New World monkeys, in a single genus "Simia" (sans Homo).[16][17][18][19] Some six million years before the ape - Cercopithecoidea bifurcation, the Platyrrhini emerged within "monkeys" by migration to South America from Afro-Arabia (the Old World), likely by ocean.In traditional usage, ape describes any tailless, larger, and more typically ground-dwelling species of catarrhine.This grouping comprises the two families: Hylobatidae, the lesser apes or gibbons; and Hominidae, the great apes, including orangutans, gorillas, chimpanzees, humans, and related extinct genera, such as the prehuman australopithecines and the giant orangutan relative Gigantopithecus.