A fossil found in what’s now northwestern China belonged to a microraptor, a gliding dinosaur that hunted ancient birds.

Pterosaurs entered the air deep in the Triassic, more than 220 million years ago. Birds followed much later, with early forms such as Archaeopteryx appearing roughly 150 million years ago. Although ...

Deep under the Jurassic rock beds of New South Wales, scientists discovered fossilized insects that push back the history of one of the world’s most hardy families of flies. These fragile traces, ...