The scientists therefore conclude that the meteorite impact was the ultimate cause of the mass extinction event at the end of the Cretaceous period. A meteorite impact can result in a thick layer ...

Roughly 201 million years ago, drastic changes extinguished many forms of life and led to conditions that allowed the ...

You might know the Cretaceous Period for big animals such as Tyrannosaurus rex and Triceratops, or for being the end of the age of dinosaurs. But what was the world like in the millions of years ...

Several factors contributed to the survival of crocodiles, turtles, lizards and birds 66 million years ago, say our readers ...

The five peaks show the "Big Five" mass extinction events ... were at the end of the Permian Period, about 250 million years ago, and at the end of the Cretaceous, some 65 million years ago.

about 66 million years ago at the end of the Cretaceous Period. There is consensus among scientists that the mass extinction was caused by the impact of a large asteroid or comet that hit the ...

The so-called Cretaceous-Paleogene extinction ... leading some to call this period the "sixth mass extinction." Unlike previous events, this potential extinction is largely driven by human ...

The end of the Cretaceous Period saw one of the most dramatic mass extinctions Earth has ever seen. Find out what brought about the end of the dinosaurs and many other animals too. The fossil record ...

This week, scientists with Woods Hole Oceanographic Institute reported that a key current, the Atlantic Meridional ...

Previous studies have posited that the mass extinction that wiped the dinosaurs off the face of the Earth was caused by the release of large volumes of sulfur from rocks within the Chicxulub impact ...

Scientists have discovered levels of iridium 30 times greater than average in the Cretaceous/Tertiary (KT) boundary, the layer of sedimentary rock laid down at the time of the dinosaur extinction.