Some were the size of a dog. Others were as large as polar bears. A newly-discovered fossil of the ferocious hyaenodont is helping scientists understand a little bit more about the mysterious creatures.

About 30 million years ago, parts of Egypt were covered in lush forests. Within those trees, lurked an order of fearsome big cat-sized carnivores called Hyaenodonta. These apex predators thrived after the dinosaurs went extinct,

Buried beneath the sun-scorched sands of Egypt’s Fayum Depression, a place where ancient forests once flourished, scientists have unearthed the skull of a fearsome predator that ruled the land 30 million years ago.

A nearly complete skull of a leopard-sized carnivore was discovered in the Egyptian desert. Anastasiia Riddle. More Videos. Toronto crash passenger recounts when Delta plane flipp