Stratigraphic dating is a Scientific Law based purely in the Law of Supra-position and the Law of Gravity. It makes more axiomatizable sense that the random vagaries of the Natural Historical general theory of Evolution anyway. Using that function, regardless of evolution, the time-line fits the Bible and the other major World old religious stories very neatly. It starts with the Toba super-volcano eruption in Indonesia. With the earliest evidence for creative large human populations being in the central Saharan desert in an environment very similar to the temperate climate we have here in Alabama today.