North African Fossil (IMAGE) European Synchrotron Radiation Facility Caption The North African fossil mandible superimposed over horizontal developmental lines on an incisor tooth, with the internal daily lines shown in the black and white image on the bottom. With this non-destructive technique it is now possible to accurately and non-destructively reconstruct how fossil teeth grew and how old juvenile individuals were when they died. The circular image on the left shows the organization of the third generation synchrotron at the European Synchrotron Radiation Facility in Grenoble, France, where the first "virtual tooth histology" images were captured from fossil humans. Credit Paul Tafforeau/ESRF Usage Restrictions None 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.