A small fossil jaw rests in Argentina’s national natural science museum in Buenos Aires. The fossil, only six inches long, ...

Long before horses thundered across the plains, a plant-eating giant with hooves of its own left footprints in the mud. Newly described fossils of Edmontosaurus annectens—a duck-billed dinosaur that ...

Add Yahoo as a preferred source to see more of our stories on Google. Monument staff work on excavated dinosaur fossils in the Quarry Exhibit Hall Parking Lot. Workers at Dinosaur National Monument ...

A UChicago-led team unearthed ‘Spinosaurus mirabilis,’ a fish-eating giant and the first new species of its kind in a century, where nothing like it was supposed to exist ...

A 125-million-year-old dinosaur just rewrote what we thought we knew about prehistoric life. Scientists in China have uncovered an exceptionally preserved juvenile iguanodontian with fossilized skin ...

Exactly where and when dinosaurs first evolved are still open questions in paleontology. Exactly where and when dinosaurs first evolved are still open questions in paleontology; it’s hard to even say ...

More than a century ago prolific fossil collector Charles Sternberg discovered the skeleton of a duck-billed Edmontosaurus dinosaur in the sandstone rocks of the Lance Formation in eastern Wyoming.

You might not think a paleontologist looking for 66-million-year-old fossils would need to ask a rancher about his great-grandmother's job in the Wyoming badlands. But that's what Paul Sereno, a ...