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

Nearly 20 years ago, while repairing a fence on his ranch in Colombia, fossil collector César Perdomo found the middle leg ...

The fossilized leg bone of a giant “terror bird” discovered in Colombia provides new insights into ancient South American ...

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

A 12-million-year-old fossil of a prehistoric "terror bird" discovered in South America might represent the largest known member of its kind found to date, a study ...

But the team thought this age was too old. The timeframe precedes the peak period of the Phorusrhacidae, the official name given to 17 species of birds characterized by dagger-like beaks.

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 ...

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

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 ...

The identification of part of the fossilized remains of a so-called "terror bird" species in South America has given researchers new insight into the apex predators ...