The Kennis brothers (IMAGE) University of Cambridge Caption The Kennis brothers examine the 3D print-out of the skull of Shanidar Z. This is what they used as a basis for the recreated head. Credit Secrets of the Neanderthals/Netflix Usage Restrictions Please credit License Licensed 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.