Homo habilis lived during Pleistocene. He lived in Africa about 2 million years ago. He was about 1.2 to 1.5 metres tall. He had bipedal locomotion, moved erect and was omnivorous. Homo habilis (habilis = mentally able or skilful) was the first tool maker and used tools of chipped stones extensively. Homo erectus appeared about 1.7 million years ago in middle Pleistocene. H. erectus evolved from Homo habilis. He had erect posture, protruding jaws, projecting brow ridges and small canines and large molar teeth. He was omnivorous. He made more elaborate tools of stones and bones, hunted big game and perhaps knew use of fire.