Tens of millions of years ago, a diverse array of bird species soared, swam, and thrived amid their scaly reptile cousins—and set the stage for modern birdlife.

Archaeopteryx's status as the forerunner of modern birds is crumbling in the face of a new, closely-related fossil. The new discovery, a feathered, chicken-sized dinosaur named Xiaotingia, has ...

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The skeleton of Xiaotingia (head is to the left) From Xu et al., 2011 Sometimes my timing is just plain awful. I had waited for years to see an authentic specimen of Archaeopteryx—the feather-covered ...

Spiked armor, tyrannosaurids, and new discoveries from the early development of birds mark important milestones in 2025.

One of the most famous fossil creatures in the world has just received a major glow-up. More than a century and a half after scientists first discovered the remains of Archaeopteryx, researchers have ...

Archaeopteryx, the famous feathered fossil, was probably the oldest and most primitive bird after all. For 150 years the creature occupied top spot on the avian evolutionary tree until this summer ...

Archaeopteryx, supposedly the oldest and most primitive bird on Earth, might not have been a bird after all, scientists say. The controversial claim, if confirmed, is something of a bombshell for ...

The iconic, winged dinosaur Archaeopteryx was dressed for flight, an international team of researchers has concluded. The group identified the color of the raven-sized creature's fossilized wing ...

Archaeopteryx, believed for 150 years to have been the first bird, was probably only a feathered dinosaur that had great difficulty getting off the ground when it lived 150 million years ago, ...

Paleontologists have corrected a case of misinterpretation: The first fossil "Archaeopteryx" to be discovered is actually a predatory dinosaur belonging to the anchiornithid family, which was ...