There are actually different theories of where humans originated:
1. The Out of Africa theory where theorists claim that we originated from Africa and from there, settled into India and other continents.
2. The Eurasia theory which is contradictory to the above theory. This theory claims that the first humans are not indigenous to India but came from Caucasus Mountains.
3. The Multi-Species theory claiming that different species of humans have lived simultaneously at the same times in different regions or locations.
I am leaning towards the Multi-Species theory though since there really is an overlap with the discovery of skulls of ancient men and the supposed time they lived on earth.