sorry, that can be contradicted by the simple fact that there aren't human beings type A,B,C,D, and E running around........DNA research established that we're all sprung by the same human female....what was it, around 40k years ago?.......
ah my mistake....it was 200k....
http://www.livescience.com/10015-age-confirmed-eve-mother-humans.html
However, this doesn't mean she was the first modern woman, rather it indicates that only her descendants survive to the present day.