Study by UChicago, Smithsonian, UK Natural History Museum challenges assumptions about survival after global catastrophe ...

Around 66 million years ago, a six-mile-wide asteroid hit Earth, triggering the extinction of three-quarters of all living ...

An asteroid strike 66 million years ago caused millions of species to go extinct—including many mollusks. By studying the ...

The end of the Ordovician, in contrast, was kicked off by the Earth’s thermostat firmly flipping to “cold” – and much like ...

In the late Cretaceous, dinosaurs ruled the earth ... Dinosaurs had survived the late Triassic mass extinction, but couldn’t survive this one. What Happened After the Meteor? Eventually, time tempered ...

A fossil from British Columbia, originally discovered in the 80s, has finally been identified as a new species named ...

it initially seemed to scientists as if a space rock impact might be a general mechanism that explained all mass extinction events identified in the geological record. But the end-Cretaceous ...

The most studied mass extinction, which marked the boundary between the Cretaceous and Paleogene periods about 66 million years ago, killed off the nonavian dinosaurs and made room for mammals and ...

Geologists call this mass die-off the K-Pg extinction event because it marks the boundary between the Cretaceous and Paleogene periods; the "K" is from "Kreide," the German word for Cretaceous.

The Cretaceous-Paleogene (K-Pg) mass extinction event, as it is known, sparked drastic ecological changes around the world. This eventually led to the extinction of approximately 55-76 percent of ...

At that point, as the Cretaceous period yielded to the Paleogene ... which led the Alvarezs to conclude that the mass extinction was caused by an extraterrestrial object. The theory gained ...

Now, a University of Michigan study has identified important changes in birds' genomes sparked by the mass extinction, called the end-Cretaceous mass extinction event, ultimately contributing to ...