Douglas Lawson with Quetzalcoatlus bone (IMAGE) University of Texas at Austin Caption Douglas Lawson with Quetzalcoatlus northropi wing bones that he discovered in Big Bend National Park. He is holding the humerus bone. Credit The University of Texas at Austin / Jackson School of Geosciences Usage Restrictions Include photo credit License Original 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.