Africa almost 2 million years ago, scientists say.
The KNM-ER 1470 cranium, discovered in 1972, combined with the new lower jaw KNM-ER 60000; both are thought to belong to the same species. The lower jaw is shown as a photographic reconstruction, and the cranium is based on a computed tomography scan (Fred Spoor / UPI) Fossils show two additional species of our genus Homo lived alongside our direct ancestral species in Africa ..