Brandt Gibson Portrait (IMAGE) Vanderbilt University Caption Ph.D. student Brandt Gibson holds a 3D model of an Ediacara biota. Credit Heidi Hall/Vanderbilt University 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.