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.

The direct ancestor of Tyrannosaurus rex would have arrived in North America after crossing a land bridge from Asia, according to a new study. The report is the latest to weigh in on the fierce ...

More information: Linqiang He et al, Cenozoic evolution of spring persistent rainfall in East Asia and North America driven by paleogeography, Communications Earth & Environment (2025).

A recent study unravels why North America, despite its comparable geographical setting to East Asia, lacks a distinct rainy season like that of East Asia. Led by scientists from the Institute of ...