In prehistoric North America, the short-faced bear (Arctodus ... there was great excitement over what extinct animal it could have belonged to. Before becoming president, Thomas Jefferson was ...

In an exciting paleontological discovery, researchers have identified a massive prehistoric predator that far surpassed the ...

One of the most bizarre-looking prehistoric animals that ever roamed this Earth ... animals lived all over the world — mainly in North America, Asia, and Europe. They are relatives of the ...

Are wild horses truly “wild,” as an indigenous species in North America, or are they “feral weeds”—barnyard escapees, far removed genetically from their prehistoric ancestors? The question at hand is, ...

Known as Euramerica, or Laurussia, it was created by the coming together of parts of North America, northern Europe ... but later species developed into ferocious, fish-slicing monsters measuring ...

A cherished icon of the West, the prehistoric-looking California condor remains one of the world's most endangered species. North America's largest avian narrowly escaped extinction in the mid-1980s ...

Formed from prehistoric vegetation ... agile, lizard-like animals. Africa collided with eastern North America in the late Pennsylvanian, an event that formed the Appalachian Mountains.

A cherished icon of the West, the prehistoric-looking California condor remains one of the world's most endangered species. North America's largest avian narrowly escaped extinction in the mid-1980s ...