For instance, new findings of archeologist Dean Snow contradict the long-standing assumption that the sole creators of the stunning French and Spanish cave art of the Upper Paleolithic were men. Snow reexamined the handprints artists left as their “signatures” on the cave walls, taking into account the differing finger formations on female and male hands. And it turns out, as he wrote in his 2013 article in American Antiquity and noted in his interview with National Geographic, that the handprints on cave walls are predominantly female.