New evidence has emerged that dinosaurs in North America were thriving, and not in decline, before the asteroid hit.

Fossil evidence from New Mexico shows dinosaurs were still strong, diverse, and thriving before their sudden extinction 66 ...

Of all the mysteries surrounding dinosaurs, none has sparked more debate than how their era ended—was it a gradual decline or ...

New fossils from New Mexico reveal dinosaurs were thriving—not dwindling—when the asteroid brought their reign to a sudden end.