Paleontologists for decades debated whether meat-eating dinosaur Nanotyrannus was actually just a juvenile Tyrannosaurus. But within a span of five weeks, the matter seems to have been definitively ...

The fossil was tiny— about the size of a modern sparrow— but it had features in common with a larger fossil bird called ...

One of the most important steps in the evolution of modern mammals was the development of highly sensitive hearing. The ...

A nature photographer stumbled upon thousands of 210-million-year-old dinosaur tracks in Italy's central Alps, near where ...

After theorizing on the fossilized bird’s cause of death, the paleontologists decided on the new species’ name: Chromeornis ...

After a career spent largely in the shadows, Field Museum ornithologist Dave Willard is enjoying a moment in the spotlight ...

This newly identified species, called Chromeornis funkyi, was discovered with a throat full of tiny stones, a discovery that ...

Animals often swallow stones called gastroliths to help grind food. But none of the thousands of similar fossil birds have ever been found with swallowed stones.

A prehistoric bird that lived and died 120 million years ago has presented forensic paleontologists with a baffling medical ...

Paleontologists from UChicago use CT scanning and software simulations to show how a 250-million-year-old mammal predecessor ...

Learn how a unique combination of anatomical traits and CT-scan data led researchers to classify Chromeornis as a new dinosaur species — and reconstruct the behavior behind its unusual death.