Hello,
Actually, the oldest fossils of anatomically modern Homo Sapiens have been found in Africa, and were dated to be about 130,000 years old.
The earliest pre-humans date back to about 4.5 million years ago.
Check out the Smithsonian site for more information, it is quite interesting:
http://www.mnh.si.edu/anthro/humanor...ha/a_tree.html
Mark