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Ramapithecus → Australopithecus → Homo habilis.

Ramapithecus: They existed about 15 million years ago. They were hairy and walked like gorillas and chimpanzees. Their fossils have been discovered in Northern India and in East Africa.

Australopithecus: They were more man-like than Ramapithecus. Australopithecus lived about 2 million years ago in East African grasslands. It is believed that they hunted with stones but their diet consisted mostly of fruits.

Homo habilis: They were the first human being like hominid. They had a brain capacity of about 650 to 800 cc. They probably did not eat meat.