The six-mile-wide asteroid punched a one-way ticket toward extinction for all non-avian dinosaurs. Some 66 million years ...

However, the Cretaceous–Paleogene extinction event was not the worst loss of life in our planet’s history. That distinction belongs to the Permian-Triassic extinction or the Great Dying.

Mixodectes pungens, a species of small mammal that inhabited western North America in the early Paleocene, was a mystery.

This geological epoch followed the Cretaceous-Paleogene extinction event that killed off non-avian dinosaurs about 66 million years ago. Many scientists believe that this mass extinction paved the ...

A discovery about the dark fur of early mammals confirms long-held theories about their evolutionary and ecological behavior.

After the Cretaceous–Paleogene extinction that killed off most of the dinosaurs, for example, the top carnivores for a while were not the mammals that ultimately replaced them but giant ...

Today’s extinction rates are sky-high ... creatures are buried beneath a conspicuous layer of sediment or rock that geologists call the Cretaceous-Paleogene (K-Pg) boundary. The layer is typically ...

Following the Cretaceous-Paleogene extinction event, mammals rapidly diversified into niches previously occupied by dinosaurs, leading to more diverse melanosome structures and new pelage color ...

Feb. 24, 2021 — A new fossil discovery is central to primate ancestry and adds to our understanding of how life on land recovered after the Cretaceous-Paleogene extinction event 66 million years ...

Mixodectes was quite large for a tree-dwelling mammal in North America during the early Paleocene -- the geological epoch that followed the Cretaceous-Paleogene extinction event that killed off ...