Old World monkey

…sulci are well marked in Old World monkeys and in the apes, the complexity of the pattern closely approximating the tortuous mazelike pattern seen in humans.

…all belong to one family, Cercopithecidae, which is related to apes and humans, and together they are classified as catarrhines (meaning “downward-nosed” in Latin). The New World monkeys are the platyrrhines (“flat-nosed”), a group comprising five families. As their taxonomic names suggest, New World (platyrrhine) and Old World (catarrhine) monkeys…

Family Cercopithecidae (Old World monkeys) 2 subfamilies of 21 genera with 103 or more species, almost all from Asia and Africa. 17 fossil species in 11 genera dating from Middle Miocene to Holocene. Superfamily Hominoidea (apes) 2 families with

…most reliable means of distinguishing Old World monkeys from New World monkeys at a glance. In New World monkeys (the Platyrrhini, meaning “flat nosed”), the nose is broad, and the nostrils are set wide apart, well separated by a broad septum, and point sideways. In the apes and Old World…

Characteristically, the teeth of Old World monkeys have a function in the maintenance of social order within the group as well as an overtly offensive role; their function as organs of digestion is relatively unimportant. They are large and subject to sexual dimorphism, being larger in males than females.…