After the demise of the dinosaurs following an asteroid strike 66 million years ago, mammals became Earth's dominant land ...

Knife-toothed reptiles called sebecids went extinct on the mainland 10 million years ago. New fossil evidence puts them on an island 4 million years ago.

Some animals seem out of place at first glance. Sometimes that can be chalked up to the limits of imagination, but other ...

Imagine a world where monstrous beasts, with jaws large enough to crush bones and attitudes as fierce as their appearance, ...