The prehistoric creature is thought to have lived around 280-270 million years ago and was likely a "top predator" in its day ...

But, they are dwarfed by their prehistoric ancestors. Long before feathered animals ruled the sky ... size from small birds to 33-foot-wingspan beasts, and these two mismatched branches were ...

New evidence shows the hefty beast may have ... examining the animals' teeth, confirming they grazed on tough, dry grasses. "It was walking along like a kind of prehistoric lawnmower really ...

This spectacular new fossil has allowed scientists to see the full anatomy of this bizarre prehistoric beast. Dr Nick Fraser ... He described it as "a very strange animal".

In prehistoric North America ... Nevertheless, the short-faced bear would have been a towering, frightening beast. Although the bears in ice age North America were the biggest and most powerful ...

But, they are dwarfed by their prehistoric ancestors. Long before feathered animals ruled the sky, flying reptiles called pterosaurs were the commanders of the air. Pterosaurs ranged in size from ...