Hagfish Fossil Scan (IMAGE) University of Chicago Medical Center Caption Synchrotron scanning of the Tethymyxine tapirostrum hagfish fossil revealed traces of chemical left behind when the soft tissues fossilized, including signs of keratin that indicate a series of slime-producing glands along the body. Credit Tetsuto Miyashita, 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.