Eggs laid by dinosaurs have provided paleontologists with a new way to tell prehistoric time. By looking to radioactive ...

When did these blockhead dinosaurs get their domes? A new fossil is “the specimen we have all been waiting for.” In this artist's reconstruction, two pachycephalosaurs from the new species Zavacephale ...

Newly dated fossils from New Mexico challenge the idea that dinosaurs were in decline—and suggest instead they had formed flourishing communities. Alamosaurus was one of the last dinosaurs from ...