With studies of fossilized bones, gut contents, eggshells and more, paleontologists revealed new and captivating details ...

Nearly 66 million years ago, a large asteroid hit Earth and contributed to the global extinction of dinosaurs, allowing the rise of mammals and leaving birds as their only living descendants.

Of all the mysteries surrounding dinosaurs, none has sparked more debate than how their era ended—was it a gradual decline or a sudden catastrophe? A new study led by Andrew Flynn of New Mexico State ...

ZHUCHENG, CHINA -- What killed the dinosaurs? Scientist Wang Haijun thinks the answer may be buried inside a 980-foot-long ravine in the Chinese countryside 415 miles southeast of Beijing where ...