Roughly 201 million years ago, drastic changes extinguished many forms of life and led to conditions that allowed the ...

With a massive body, sharp teeth, and jaws so powerful they could crush a car, this famous carnivore dominated the forested river valleys in western North America during the late Cretaceous period ...

but it wasn’t until 1990 that researchers linked it to the Cretaceous–Palaeogene extinction event. In 2022, a 9-kilometre-wide crater, made at about the same time as the Chicxulub crater ...