An artist’s illustration of Nyasasaurus (IMAGE) University College London Caption Nyasasaurus could be the earliest known dinosaur, or else a close relative of early dinosaurs. Credit Mark Witton/The Trustees of the Natural History Museum, London 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.