Modern humans are a complex mixture of neanderthals , homo sapiens, Denosovians and others. Irrelevant bells went off for me too regarding the big head hype in that link BUT the idea of Denosovian archaeology and still existing architecture is intriguing while never proved. Sometimes if you don't look you won't see. There are plenty of scholorly sites that put the 'out of Africa' theory in the shade.

I should paint a grinning 14ft. tall Denisovian holding an adult Hobbit in one hand. :^/

Didn't Pharoh Achenaton have a wierd head?