T. rex is the deadliest land predator ever to live, and there has long been a fascination with the dinosaur that has been extinct for about 66 million years. Khankhuuluu, a newly discovered ...

The direct ancestor of Tyrannosaurus rex would have arrived in North America after crossing a land bridge from Asia, according to a new study. The report is the latest to weigh in on the fierce ...

While Tarbosaurus, an ancestor of T. rex, clocked in at between 3,000 and 6,000 kilograms (6,613 pounds and 13,227 pounds), the fleet-footed Khankhuuluu mongoliensis likely weighed only around 750 ...

By Jack Guy, CNN (CNN) — The direct ancestor of Tyrannosaurus rex would have arrived in North America after crossing a land bridge from Asia, according to a new study.