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

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 yet.

Fossil of an extinct Phorusrhacid "terror bird" in the Tatacoa Desert reveals insights into ancient predators and ecosystems.

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

In Colombia, a fossil-collecting rancher has found a giant, flightless killer from 13 million years ago — and a missing link to the region’s evolutionary history. César Perdomo, a rancher and ...

The end of a terror bird’s left tibiotarsus, a lower leg bone in birds equivalent to that of a human tibia or shin bone, dates back to the Miocene epoch around 12 ...

Millions of years ago, apex predators in the Phorusrhacidae family lived up to their more common name—terror birds. The mostly flightless, meat-eating dinosaur ...

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