Untangling the Dinosaur Family Tree (IMAGE) University of Sao Paulo Scientific Outreach Unit Caption The three possible trees of dinosaurs. Credit Image © Max Langer Usage Restrictions Image may only be used with appropriate caption and credit. 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.