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 ...

An image shows the scaly skin of a crest over the back of the juvenile duck-billed dinosaur Edmontosaurus annectens, a specimen nicknamed "Ed Jr." by researchers. The juvenile is estimated to have ...