In Colombia, a fossil-collecting rancher has found a giant, flightless killer from 13 million years ago — and a missing link ...
The mostly flightless, meat-eating dinosaur descendents were the size of dogs at their smallest, but the largest known ...
Fossil of an extinct Phorusrhacid "terror bird" in the Tatacoa Desert reveals insights into ancient predators and ecosystems.
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 fearsome flesh-eating bird from the Phorusrhacid family - known as "terror birds" - may be the largest of its kind ever ...