The earlier hominid forms had already moved out of Africa over a million years ago. Precursor hominids like Heidelberg man had evolved in Europe 500,000 years ago, and Neanderthal probably evolved from that line also in Europe and Eurasia. The have not found any Neanderthal traces in Africa.
from the FRchives:The Scars of Evolution:"The most remarkable aspect of Todaro's discovery emerged when he examined Homo Sapiens for the 'baboon marker'. It was not there... Todaro drew one firm conclusion. 'The ancestors of man did not develop in a geographical area where they would have been in contact with the baboon. I would argue that the data we are presenting imply a non-African origin of man millions of years ago.'"
What Our Bodies Tell Us
About Human Origins
by Elaine Morgan