New UCL-led study finds T-Rex evolved in North America from Asian ancestors and grew massive as the climate cooled after the Cretaceous Thermal Maximum.

Around 70 million years ago, Earth’s largest predators were dominating continents, driven by an extraordinary evolutionary ...

Paleontologists have long considered Tyrannosaurus rex a North American reptile, but a study now claims that the king of the ...

Researchers trace T. rex origins to Asia and megaraptors to Gondwana. Climate changes and predator extinction fueled their ...

A new study suggests that the T. Rex's ancestors may have evolved in North America, contradicting the mainstream evolutionary ...

Being better able to tolerate cooler temperatures than their rivals, tyrannosaurs grew larger to become the apex predators of the Late Cretaceous. By 68 million years ago, T. rex was 12 metres long ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study.

While the world famous Tyrannosaurus rex was roaming the Hell Creek Formation of central North America, its slightly less well known cousin was presiding over the scrubland and plains of Mongolia.

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the ...

T. rex was previously suspected to have evolved in Asia and migrated to North America, but new research shows that the direct ...

A new study suggests that the direct ancestors of Tyrannosaurus rex crossed a land bridge from Asia to North America around ...