Researchers have unearthed two dinosaur “mummies” in Wyoming—and the fossils within shed light on what the duck-billed creatures would have looked like 66 million years ago. The dinos are a pair of ...

In the badlands of eastern Wyoming, the Lance Formation is a trove of prehistoric fossils. And one area in particular — a region less than 10 kilometers (6 miles) across — has provided scientists with ...

Long before city lights drowned out the stars, the night sky was a breathtaking sight, and during the age of the dinosaurs, it was a completely different world overhead. The constellations we ...