The extinction of dinosaurs remains one of the greatest topics in natural history. A new study challenges the idea that they ...

Small fossils show mammals moved to the ground before the dinosaurs vanished. New plants changed habitats, giving better food ...

The Cretaceous-Palaeogene extinction 66 million years ago is possibly the most famous mass extinction event. It was caused by a large asteroid crash-landing off the coast of Mexico, which changed the ...

Scientists analyzed the fossil record of North America in the 18 million years up to the asteroid impact between 66 and 84 ...

The idea that dinosaurs were already in decline before an asteroid wiped most of them out 66 million years ago may be explained by a worsening fossil record from that time rather than a genuine ...

After a temperature spike in the mid-Cretaceous, the climate began to cool, and the tenor changed. Other creatures, such as frogs, salamanders, turtles, crocodiles, and snakes, proliferated on the ...

Fossils from the late Cretaceous are less likely to be discovered, say researchers, primarily because of fewer locations with ...

ULAANBAATAR: A previously unknown species of ancient mammal that lived alongside dinosaurs during the Cretaceous period, ...

Scientists divide the Mesozoic Era into three periods: the Triassic, Jurassic and Cretaceous. During this era, the land gradually split from one huge supercontinent into smaller ones. The associated ...

A rare new species of two-clawed dinosaur has been discovered by scientists in Mongolia's Gobi Desert. The species, named ...