After the dinosaurs disappeared, rodents slipped into the empty spaces and quietly spread into nearly every habitat on Earth.

There was a time when the planet was crawling with enormous dinosaurs, the next, a six-mile-wide asteroid hit, and life ...

The “mesozoic cow” was a dinosaur with hundreds of ever-replacing teeth. Here’s how its uniquely adapted skull allowed it to ...

From riverbanks to shallow lakes, Spinosaurus combined display, biomechanics and hunting power in one of evolution’s strangest designs.