We may assume that the precursor of man had arrived at the anthropoid-ape level by the middle of the Miocene period.
|anthropoid ape |
A primate belonging to the family Pongidae, which includes the chimpanzee, bonobo, gorilla, and orangutan. Orangutans are arboreal whereas the other three species are terrestrial or semiarboreal. Anthropoid apes move in trees mainly by arm-swinging and on the ground by quadrupedal walking in which the upper body weight is borne on the knuckles. Also called great ape, pongid. Compare hominid.