Its skull was more than 2 feet (0.6 meters) long, and researchers estimate the entire animal could have been to 8.2 feet (2.5 m) long, potentially making it the biggest creature of its kind, according ...

The fossilized remains of a nearly 75-million-year-old “swamp dweller” have been discovered by paleontologists in northwest Colorado. The University of Colorado team behind the discovery has been ...