Thoracic Region of <i>Ichyostega</i> (IMAGE) European Synchrotron Radiation Facility Caption This image shows the thoracic region of Ichyostega in various views, with the sternum elements depicted in blue. Credit Royal Veterinary College/S. Pierce 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.