Evolutionary Tree of Predatory Dinosaurs (IMAGE) PeerJ Caption Simplified evolutionary tree of predatory dinosaurs (theropods). Saltriovenator predates the massive meat-eating dinosaurs by over 25 million years: it is the oldest known ceratosaurian, and the world's largest predatory dinosaur from the Lower Jurassic. During the Jurassic, the three- fingered tetanuran theropods appeared, which gave rise to birds. Credit Andrea Cau Usage Restrictions All material can be shared under CC BY 4.0 - Please provide attribution and a link back to the article: https://peerj.com/articles/5976/ 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.