[CharlesWayneCT]

The evidence, which includes teeth and a carefully butchered jawbone from a site called Les Rois in southwestern France, could represent the world's first known biological proof for direct contact between the two human groups.

I'm confused. I thought the one group evolved from the other group, which would be "proof" that they had direct contact, as the mutated versions of the 2nd group would have coexisted for years within the 1st group while they continued mutating in the new human group.

[MEGoody]

Oh, one group didn’t evolve from the other. They just had a common ancestor somewhere along the way. (At least, that seems to be the standard answer.)