Fossil Fish Romundina (image) European Synchrotron Radiation Facility Caption This image shows a reconstruction in three dimensions of the skull of the small fossil fish Romundina (415 million years old) that was scanned at the ESRF. The internal structures of the face reveal the internal anatomy show a mixture of structures of jawless and jawed vertebrates (in anterior view). External bones of two different kinds in orange and pink grey, nerves and cranial cavity in yellow, arteries in red, veins in dark blue and inner ears in light blue; anterior part of the bone rendered semitransparent. Credit Vincent Dupret, Uppsala University Usage Restrictions Permission is granted by Nature for external media use of the file. 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.