Excised cranial pieces (IMAGE) Brown University Caption Left: Trephination with refit excised cranial piece. Right: Both extant pieces found during analysis. Credit Rachel Kalisher et al Usage Restrictions For noncommercial news use only. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.