I love these sorts of discoveries - most times the accepted paradigm is challenged, good science results! (Sadly, only most times...) And change is always vital to robustness.
And sometimes there are bits of unusual humor. Particularly this tautological statement from the caption under the picture:
"The unusual positions of the femur heads, one up and one down, broken in the same manner next to each other is unusual."
And Grumpy Cat is grumpy...
Thanks for sharing. I have also wondered about what science has said on it based on what some natives have said and taught. Also, based on that I would also like to know how long us homo sapiens have been in South America.