“The nomads' egalitarian lifestyle astonished the Greeks, who kept their own wome…” — Adrienne Mayor

Indeed, many ancient Greek writers do treat Amazons as a tribe of men and women. They credit the tribe with innovations such as ironworking and domestication of horses. Some early vase paintings show men fighting alongside Amazons.

I write in two very different places: my desk in Palo Alto, California, is piled high with myriad jumbled books and papers whose stratigraphy is a challenge. Summers in Bozeman, Montana, I write in a spare space, surrounded by interesting rocks and fossils instead of books, on an old oak table with nothing but my laptop.

Many scholars are not used to perceiving natural knowledge expressed in mythological language. If the study of fossils was not mentioned by Aristotle or Thucydides, and it wasn't, then it just didn't exist for many classicists and ancient historians.

We know their names: Hippolyta, Antiope, Thessalia. But they were long thought to be just travelers' tales or products of the Greek storytelling imagination. A lot of scholars still argue that. But archaeology has now proven without a doubt that there really were women fitting the description that the Greeks gave us of Amazons and warrior women.