Ancient superpredator that lived 328 million years ago was 'the T. rex of its time'

Prehistoric Superpredator: Weird Whatcheeria Was the “T. rex of Its Time”

Ancient Iowan superpredator got big by front-loading its growth in its youth. Fossils found only at the Field Museum reveal the growth history of Whatcheeria. Although the Field Museum in Chicago is famous for SUE the T. rex, it is also home to the best, most-complete fossils of a prehistoric su

Ancient superpredator that lived 328 million years ago was 'the T. rex of its time'

Fangy Whatcheeria measured up to 6.5 feet (2 meters) long, and more than 300 million years ago, it was the apex predator in the sinkholes-turned-lakes of the American Midwest..