A Feathered dinosaur (IMAGE) University of Adelaide Caption The feathered dinosaur Microraptor pounces on a nest of primitive birds (Sinornis). Both species lived during the Cretaceous Period (about 120 million years ago) in what is now northern China. Credit Image by Brian Choo. Usage Restrictions Only to be used with this story and with acknowledgement of illustrator 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.