They also estimated the bird’s weight to be 156 kilograms, about that of a giant panda (Ailuropoda melanoleuca), which would ...

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

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

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

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 ...

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 ...

A FLESH-EATING bird has been uncovered after nearly 12 million years in a Colombian desert. Scientists revealed this extinct “Terror Bird” was the largest of its ...

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 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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Millions of years ...

Millions of years ago, long-legged, big-beaked, meat-eating “terror birds” stalked the Americas. The imposing creatures ruled the roost as top predators of their ...