25 MYA Catarrhini males gain color vision but lose the pheromone pathway. Catarrhini (infraorder)(Old World Primates) splits into 2 superfamilies, Old world monkeys (Cercopithecoidea) and Hominoids. The Old world monkey does not have a prehensile tail (e.g. Baboon); some do not have tails at all. All hominoids have no tails (e.g. the lesser apes, great apes and hominids).
15 MYA Apes from Africa migrate to Eurasia to become gibbons (lesser apes) and orangutans. Human ancestors speciate from the ancestors of the gibbon. Orangutans, gorillas and chimpanzees are great apes. Humans are hominids.
13 MYA Human ancestors speciate from the ancestors of the orangutan. A relative of orangutans:- Lufengpithecus chiangmuanensis (Northern Thailand). Pierolapithecus catalaunicus, Spain, common ancestor of great apes and humans.