The sacrum is made of 5 fused vertebrae configured as an inverted triangular bone that is concave anteriorly and convex posteriorly. Human Bone Laws & Information: In short, it is perfectly legal to possess and sell human bones in the United States. There are a few exceptions to this: a few states have banned import and export, and of course, any archaeological resources protected by the Native American Graves Protection and Repatriation Act. For more information and specifics please visit our FAQ page. The Paxton Gate cannot ship any real human bones to the following states: Georgia, Tennessee, and Louisiana. Sourced ethically via vintage educational and medical specimens.