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 ...

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

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

A massive terror bird fossil, the largest of its kind, was recently uncovered in Colombia’s desert—shedding light on ancient ecosystems.

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

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