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May 6 (Reuters) - An exquisitely preserved fossil of the earliest-known bird Archaeopteryx, a pigeon-sized specimen revealing new anatomical details of a creature whose 19th century discovery lent ...

Archaeopteryx is the fossil that clearly demonstrated Darwin's views. It's the oldest known fossil bird, and it helps show that all birds -- including the ones alive today -- emerged from dinosaurs.

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The Chicago Archaeopteryx, seen under UV light, shows soft tissues alongside the skeleton. Delaney Drummond Archaeopteryx—a small, feathered dinosaur that lived around 150 million years ago—changed ...