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 ...

To gain a better understanding of the creature, a team at the University of Chicago led by anatomist Paul Sereno tracked down ...

Dinosaurs weren’t dying out before the asteroid hit—they were thriving in vibrant, diverse habitats across North America.

New dating has revealed that New Mexico's last dinosaurs were healthy, diverse and thriving at the end of the Cretaceous ...

Creatures that had ruled the planet for more than 170 million years — from the gigantic sauropods that shook the ground to the fearsome tyrannosaurs — disappeared forever. However, this is not a story ...

New dates for a long-debated New Mexico fossil site reveal that dinosaurs were thriving and regionally diverse until the end-Cretaceous asteroid ...

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

"The pace of change we’re seeing today is unlike anything we know of in the past 66 million years," said ecologist Jack Hatfield.

New findings indicate dinosaurs were flourishing just before the asteroid strike. Fossils from New Mexico show diverse and ...

For decades, many scientists believed dinosaurs were already dwindling in number and variety long before an asteroid strike ...

Some experts believe that we're already in a sixth mass extinction event, but given the numbers, others aren't so sure.