At some point the devs will start making clothing, jewelry, decorations and other aesthetic things. One important component will be hairstyles. Hairstyles are often cultural and distinctive, and when you have a very limited selection for aesthetics and individuality, hairstyle becomes more important. It can denote status or skill, as well as marriageability or even denote grieving. As an example, girls of the Himba tribe in Africa have one distinct hairstyle while married women have another.
The only hairstyle examples I have seen from the Neolithic are depicted in figurines and artwork. Any links that people can post to actual art depicting any sort of hairstyle, from the Neolithic, would be useful. I can then recreate these with my mannequins and wigs, photograph them, and then post them. Not only will this help the Developers, but it will be fun. I appreciate any resources anyone has, and I will post the ones that I have tonight.