A massive predator once roamed the Earth, towering over its rivals and casting a long shadow on the ancestors of T. rex. This giant, now known as Ulughbegasaurus, ruled the prehistoric world around 90 ...

“They likely kept the tyrannosaurus down,” she said. "Ulughbegasaurus was the dominant apex predator of its time." The sheer size of Ulughbegasaurus gave it a commanding presence, but its ...