Dinosaurs weren't in decline when an asteroid smashed into Earth and wiped them out, scientists say. Instead, the idea that dinosaur diversity was declining before the asteroid struck 66 million years ...

A Tohoku University-led team said it has found in Hokkaido a layer showing the asteroid impact linked to the dinosaur ...

Add Yahoo as a preferred source to see more of our stories on Google. 66 million years ago, a cataclysmic event shook the Earth. A massive asteroid impact led to the extinction of diverse life forms ...

The Cretaceous Era—roughly 145 to 66 million years ago—was the last hurrah of the dinosaurs. A massive asteroid impact brought them to a violent end, but there’s more to the story. The Cretaceous ...

Massive volcanic eruptions on the Indian peninsula have long been proposed as an alternative cause for the demise of the dinosaurs. This phase of active volcanism took place in a period just before ...

Dinosaurs’ extinction “re-engineered” Earth’s surface, according to new research. The reptiles had such an “immense” impact on the planet that their sudden exit led to wide scale changes in landscapes ...

LAS CRUCES — A geology professor who joined the New Mexico State University faculty this year is the lead author of a new paper addressing a long-standing question about the extinction of dinosaurs.

Rocks formed immediately before and after non-avian dinosaurs went extinct are strikingly different, and now, tens of millions of years later, scientists think they’ve identified the culprit—and it ...

Scientists have created a new map of "mega ripples" on the seafloor caused by the Chicxulub asteroid impact that wiped out the dinosaurs, revealing further the events that led to the devastating mass ...

This is an artistic reconstruction of what Colorado would have looked like 67 million years ago. The latest issue of the University of Wyoming’s only peer-reviewed scientific journal, Rocky Mountain ...

An assembly framework and video to learn about about dinosaurs, paleontology, and the ancient natural history of Earth.

Still, the mystery of why the geology of landscapes should have changed so much before and after dinosaurs' extinction remained. But then Dr. Weaver encountered a series of talks about how present-day ...