Time Magazine and Wrong Skull Science:
Um. No. “Inca bones” are just one of many different types of ossicles—tiny pseudo-bones that form within cranial sutures. They have jack and squat to do with being “Inca.” They’re under some genetic influence, but they seem to be much more related to environmental factors like cranial modification.
On a related note, WTF is up with this “news” story.