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.

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 ...