<i>Acanthodes</i> Molds (IMAGE) University of Chicago Medical Center Caption These are various latex molds taken from the fossil of Acanthodes bronni. Credit Megan Doherty/University of Chicago 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.