A simplified evolutionary tree (IMAGE) Università di Bologna Caption A simplified evolutionary tree showing where Tethyshadros would fit between its hadrosauriform relatives, the so-called duck-bill dinosaurs Credit University of Bologna Usage Restrictions Credit must be given to the creator. License CC BY 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.