For tens of millions of years, whales have been a part of the oceans. Because of this, it would be easy to believe that ...

A spectacular fossil trove on the Arctic island of Spitsbergen shows that marine life made a stunning comeback after Earth’s ...

The oldest fossilized remains of complex animals appear suddenly in the fossil record, and as if from nowhere, in rocks that ...

These "total monsters of fishes" are extinct today, though new clues about their lives come from CT scans and their closest ...

A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is ...

Bite force, a measure of the strength of an animal's bite, helps researchers understand a species' role in the ecosystem.

During these waves of mass extinction, most vertebrate survivors were confined to refugia, or isolated biodiversity hotspots ...

Despite multiple mass extinctions, the frilled shark has managed to thrive for 100 million years. Today, it remains one of ...

Every animal with a brain needs sleep — and even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and even jellyfish sleep.

Museum fossils in England reveal 200-million-year-old coelacanths, fish that swam alongside the first dinosaurs ...

Discover how the first mass extinction put jawed fishes on the map, species that would later come to dominate animal life on ...

From polygamous tree toads to heavy stick bugs, this year’s extensive new species discoveries are changing the way we see our ...