Eodromeus

Paul Sereno dates Eodromaeus from the dawn of the dinosaur era, some 230 million years ago. (Credit: Mike Hettwer/U of C)

Paul Sereno Latest Dinosaur Find: The Precursor To T-Rex

The University of Chicago’s head dinosaur hunter has unwrapped a small new package with teeth and claws–a distant ancestor of T-Rex.

01/13/2011