A fresh analysis of a site in New Mexico provides a glimpse into the final days of the dinosaurs, showing their diversity before going extinct.

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

For decades, many scientists believed dinosaurs were already dwindling in number and variety long before an asteroid strike sealed their fate 66 million years ago.

New dating techniques of a century-old fossil site in New Mexico dispel the theory that dinosaurs were already in decline before the fateful asteroid hit.

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, causing mass extinction. New research suggests dinosaur populations were still thriving in North America before the asteroid strike,

New research suggests that dinosaur populations were thriving in North America before the asteroid impact 66 million years ago that caused mass extinction

A trove of specimens from New Mexico may help settle a long-running argument about the diversity of dinosaurs before their extinction.