Fossil jaw of an early mammal (IMAGE) University of Bonn Caption Fossil jaw of an early mammal with complete tooth row, prepared for scanning in the synchrotron. Credit Photo: Elis Newham Usage Restrictions This photo may be used together with the press release. 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.