Authentic human parietal bones form the upper portion of the cranial vault. This matched pair retains visible cranial sutures and natural interior bone texture, offering a clear view of skull structure and development.nProfessionally cleaned and preserved for anatomy education, medical training, osteology collections, and comparative study.nWe believe education is the greatest gift osteology can share and that every human specimen can contribute to the advancement of science. These specimens are provided to us by retired physicians, medical researchers, dental professionals, and former university medical programs. We also work with accredited donor programs. A small sample – often antiques that simply do not qualify for medical/research grade usage – are made available to osteology enthusiasts worldwide so that they may continue to educate and inform.nnThis product requires additional insurance to ensure your package arrives safely. A $25 shipping insurance fee will be added to the cart at the time of checkout.nnSpecifications:nnParietal Bone Length 13 cm (5.1 in)nParietal Bone Width 13.8 cm (5.4 in)nParietal Bone Height 9.8 cm (3.9 in)