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

Fossils of the T. rex, tyrant lizard and queen of the dinosaurs, are found exclusively in North America. Strangely, they have ...

Once in North America, T. rex evolved and became widely distributed across Laramidia, the western half of the continent ...

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

Being better able to tolerate cooler temperatures than their rivals, tyrannosaurs grew larger to become the apex predators of ...