Dinosaurs' Last Spring (IMAGE) Florida Atlantic University Caption Springtime, the season of new beginnings, ended the 165-million-year reign of dinosaurs and changed the course of evolution on Earth. Credit Florida Atlantic University/Getty Images Usage Restrictions Credit: Florida Atlantic University/Getty Images 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.