Image 3 Fish scales (IMAGE) Society of Vertebrate Paleontology Caption These are fish scales (orange, with the ganoine layer highlighted in purple) and fin rays (green) in detail. Credit Martin Qvarnström 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.