The oldest Mongoloid skeleton ever found is only 10k years old. (Professor Stephen Oppenheimer) If you've followed my posts, you'd know that I have been suggesting an Asian origin for Caucasians for some time now, specifically the Gansu Province of China. I think there were Caucasian 'like' people all over Asia before the Mongoloids arrived.
Further, Stephen Oppenheimer says that about 50% of Europeans can trace their DNA back to one man in the north Indus valley and this group made their way to Europe through the Middle East.
The other 50% of Europeans can trace their origins to a son of the same man who made their way to Europe a thousand years later through Russia. So...
Well, I've got a box full of photographs of my ancestors from before 1900, some of them French, some German, and some Native Americans -- who look very Asian to me.
I've got census records going back a couple of centuries and old letters that give me the history of my Chippewa ancestors, the ones that intermarried with the French Canadians, the ones that lived on Turtle Mountain, the ones that went to Indian Schools, the ones that had names I can't even pronounce.
I've got my own mtDNA, that's Haplogroup A2.
All of which tell me that some of my own ancestors walked over Berengia from Siberia, and looked more like Mongols than Kenniwick Man.