Migration of Dinosaurs (IMAGE) University of Leeds Caption A map shows the migration of dinosaurs from Europe during the Early Cretaceous period (125-100 million years ago). Credit Alex Dunhill, University of Leeds Usage Restrictions Credit: Alex Dunhill, University of Leeds 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.