Excavation (image) Max Planck Institute for the Science of Human History Share Print E-Mail Caption This is an excavation of mammal fossils at the Ti's al Ghadah site, Saudi Arabia. Credit Palaeodeserts Project (Michael Petraglia) Usage Restrictions This image may only be used in the context of reporting on this publication and with appropriate credit information. Share Print E-Mail 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.