The bone, described two decades after its discovery, suggests the species might have grown up to 20 percent bigger than other ...

The mostly flightless, meat-eating dinosaur descendents were the size of dogs at their smallest, but the largest known ...

Fossil skeleton of Paraphysornis, a member of the extinct terror bird family. While this specimen is not the one analyzed in ...

The fossil of a massive predator called a terror bird that roamed South America 12 million years ago is from the largest ...

Researchers confirm the terror bird fossil 20 years after its South American discovery, comparing the creature to a massive, ...

A 12-million-year-old fossil has revealed what may be the largest known "terror bird" ever found, according to ...

In Colombia, a fossil-collecting rancher has found a giant, flightless killer from 13 million years ago — and a missing link ...

Evolutionary biologists report they have analyzed a fossil of an extinct giant meat-eating bird -- which they say could be the largest known member of its kind -- providing new information about ...

Another Trump term could spur Europe’s efforts to stand on its own, but it is far from clear its leaders will seize the moment this time. By Steven Erlanger Beijing is expecting more ...