The Chicago Archaeopteryx features more soft tissue and delicate skeletal details than any known fossil of its kind, and ...

Most modern birds solved this issue by evolving shorter appendages to accompany their tertial feathers. But even though ...

Key to the first bird’s flight was likely a set of never-before-seen feathers, called tertials, found on the upper arm of the ...

New insights into the flying capabilities of a nonbird dinosaur were drawn from an unusually well-preserved specimen known as ...

A Chicago fossil of Archaeopteryx uncovers unknown features, supporting theories of bird evolution from dinosaurs and ...

"Archaeopteryx is not the first dinosaur with feathers, nor is it the first dinosaur with wings. However, we think it is the ...

Archaeopteryx is the fossil that proved Darwin right. It's the oldest known fossil bird, and it helps show that all birds— ...

Based on what we know of living birds with long wings, the role of tertial feathers is primarily to close the wing gap and ...

A new analysis of a pigeon-sized Archaeopteryx fossil in the collection of the Field Museum in Chicago is revealing an array ...

A new study on a well-preserved Archaeopteryx fossil in Chicago unveils surprising features of the earliest-known bird. By ...

Archaeopteryx is the fossil that proved Darwin right. It is the oldest known fossil bird and helps demonstrate that all birds ...

Scans of the Chicago Archaeopteryx show feather and bone features that worked together to create lift.