Evolution of Primates Section 32.3
Primate Characteristics Grasping hands and feet Cling to their mothers Climb trees Hold food Forward facing eyes Binocular vision aids in depth perception Useful for tree-dwelling and capturing prey
Grasping hands
Forward facing eyes
Nonhuman Primates Monkeys Apes Diurnal Feed mainly on fruits and leaves Have opposable thumbs Apes Gibbons, orangutans, gorillas, chimpanzees Large brains No tails
Gibbons & Gorilla
Hominids Primates that walked upright Early ancestors of humans Australopithecines: Larger brain cavity than apes Lucy – the most famous fossil Other fossil hominids have been discovered
Fossil hominid skulls
Fossil Lucy