Q. Primates called Dryopithecus and Ramapithecus were existing about

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Solution:

About 15 mya, primates called Dryopithecus and Ramapithecus were existing. They were hairy and walked like gorillas and chimpanzees. Ramapithecus was more man-like while Dryopithecus was more ape-like. Two mya, Australopithecines probably lived in East African grasslands. Homo erectus about 1.5 mya.