Reconstruction of an avisaurid (e.g., A. darwini). Morphology of the tarsometatarsus suggests that these large birds engaged in raptorial behavior and could carry proportionally large prey.

Some of Earth’s most famous dinosaurs once called what is now the western United States home. However, dinosaurs including the mighty Tyrannosaurus rex and sturdy Triceratops, were not the only types ...

It is now widely accepted that birds are descended from dinosaurs. It is also understood that this transition encompasses some of the most dramatic transformations morphologically, functionally, and ...

Golden autumn sunlight glints through the sedges and shrubs of the tundra in northern Alaska. Winter is approaching, and soon the region will be buried under snow and ice. For the past three months ...

The discovery of 27 avian footprints on the southern Australia coast -- dating back to the Early Cretaceous when Australia was still connected to Antarctica -- opens another window onto early avian ...

A new and nearly complete skull of Vegavis iaai discovered in Antarctica suggests that modern birds originated before the end-Cretaceous mass extinction.

The fossilized 69-million-year-old skull of the oldest known modern bird has been discovered. The early relatives of ducks ...

The discovery of a remarkably near-complete fossil skull of the earliest known modern bird may help settle a long-standing debate about the evolutionary history of our feathered friends. The specimen ...

Fossilized bird tracks discovered in Australia show these ancient creatures lived in the southern polar regions on the supercontinent of Gondwana. When you purchase through links on our site, we may ...

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

Stephen has degrees in science (Physics major) and arts (English Literature and the History and Philosophy of Science), as well as a Graduate Diploma in Science Communication. Stephen has degrees in ...