Glider (IMAGE) Penn State Caption Close up CT scan, composite image of fossil gliding reptile Mecistrotrachelos apeoros. Curved foot and ribs are clearly visible. Credit Tim Ryan, Penn State 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.