Skull elongation was in fashion, mainly in the upper classes of some civilizations in the Americas. It was the cosmetic surgery of the time. The elites wanted to look different from the crowd. ---------- Post added 2010-06-27 at 09:14 ---------- Yes, it is interesting but I wonder how those Amazonians LOST the skills to count beyond five!!! Most tribal people worldwide were able to count to thousands, at least, with a few exceptions. So, more that the origin of counting, I bet what the anthropologist found was a group that forgot how to count.... Amazing.