Origin and Evolution of Man

Year	Evolution	Characteristics
15 million years ago	Dryopithecus (ape-like) and Ramapithecus (man-like)	Hairy and walked similar to chimpanzees
3 − 4 million years ago	Man-like primates	Not tall, but walked straight
2 million years ago	Australopithecines, also called Homo habilis,lived in East Africa	Used stone weapons and ate fruits; human-like with brain capacity of 650 − 800 cc; not meat eaters
1.5 million years ago	Homo erectus	Brain capacity of about 900 cc; were meat eaters
1,000 − 40, 000 years ago	Neanderthal man	Brain capacity of 1400 cc; used hides
75, 000 − 10, 000 years ago	Homo sapiens

When we compare the skulls of an adult human being, baby chimpanzee, and adult chimpanzee, we observe that skull of baby chimpanzee resembles human being more as compared to adult chimpanzee.