T. rex evolved from ancestors in the second group, a lineage of bone-crushers that once again crossed the land bridge back into North America between 73 and 67 million years ago—making T. rex a ...

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 ...

The largest known T rex specimen reached a length of 40-1/2 feet. Khankhuuluu means "Dragon Prince" in the Mongolian language. Tyrannosaurus rex means "tyrant king of the lizards." ...

Dating back 86 million years, it’s the most advanced tyrannosauroid yet found outside the true “eutyrannosaurs” — a clade that includes T. rex, Tarbosaurus, and Gorgosaurus.

The dragon prince was not a Targaryen but a distant cousin of the T-rex: bones of one of the great hunters of the past are found A study published in the journal Nature reveals something very ...

It would have weighed about 750kg, while an adult T.rex could have weighed as much as eight times that, so "this is a transitional [fossil]," explained Prof Zelenitsky, "between earlier ancestors ...

Comparing the two dinosaurs would be like putting a horse next to an elephant —Khankhuuluu would have reached T. rex’s thigh in height, Zelenitsky said. “Khankhuuluu was almost a tyrannosaur, but not ...