I'm hoping someone can point me in the direction of somewhere that has 3-D printer files available for download of fossils, specifically skulls. I teach geology over the summers to children, and would love to incorporate a couple 3-D printed skulls if possible. I believe I have located a 3-D printer and a friend who is willing to let me print a few things. If anyone has a website that they can recommend which makes its 3-D printer files available or would be willing to share their own files with me, I would greatly appreciate it. No preference on species, variety is preferred to show a better depiction of Earth's history.