The fossilized leg bone of the terror bird went unidentified for almost 20 years. Nearly 12 million years ago, the largest ...

Terror birds were apex predators some 12 million years ago in South America. A newly published discovery could be the largest ...

Evolutionary biologist Federico Degrange from Argentina's Center for Research in Earth Sciences and colleagues found the bird ...

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

A massive meat-eating bird sat high atop the food chain about 12 million years ago. Researchers analyzed a bone of the ...

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

Researchers including a Johns Hopkins University evolutionary biologist report they have analyzed a fossil of an extinct ...

While past terror bird fossils placed the meat-eating birds at 3 to 9 feet tall, new findings suggest that some were even ...

A team of researchers analyzed a 12-million-year-old fossilized bone discovered in Colombia's fossiliferous Tatacoa Desert ...

The fossil was on display in a museum, but unlabeled and hidden right under paleontologists’ noses for 20 years.

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

A Colombian rancher has discovered a fossilized bone that points to the existence of a giant terror bird species. The fossil, ...