But they lacked the new, improved version that appeared toward the end of the Stone Age in H.
Like the Colorado researchers, Klein argues that a brain-altering genetic mutation in H.
That theory previously received a boost with the discovery in Portugal of a 24,500-year-old skeleton that Trinkaus and Zilhao view as a prime example of interbreeding between modern H.
The Oase fossils contain a different mosaic of characteristics, with more pieces from archaic H.
At Herto, White's team also unearthed skull pieces and teeth from seven other H.
erectus populations apparently survived for a while in Asia, whereas H.