Long before dinosaurs appeared, Dunkleosteus dominated ancient oceans with powerful jaws and thick bony armor. Once believed ...

Long before humans ever walked the Earth, our planet was home to some of the most extraordinary killing machines evolution has ever produced. From the crushing bite of an armored fish that hunted 380 ...

Inside the twisting tunnels of Mammoth Cave, the world’s largest cave system, scientists have uncovered fossilized remains of two ancient shark species that once prowled Earth’s waters some 325 ...

The sabretooth cat was one of the most terrifying animals ever known to exist. For close on two million years, this relative of the modern lion terrorised the Americas, using its knifelike fangs to ...

Fossils found in north-west Queensland have given palaeontologists "direct evidence" of the behaviour of prehistoric animals in the Eromanga Sea 100 million years ago. This is one of the clearest — ...