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

Long before whales dominated the oceans, Earth’s seas were home to a fish so massive it continues to challenge our ...

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

Buried in Australia's so-called dead heart, a trove of exceptional fossils, including those of trapdoor spiders, giant ...

A rapid climate collapse during the Late Ordovician Mass Extinction devastated ocean life and reshuffled Earth’s ecosystems.

A massive ice age wiped out ocean life 445 million years ago, reshaping ecosystems and setting the stage for jawed fish ...

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

About 445 million years ago, Earth nearly wiped out life in the oceans. Glaciers spread across the supercontinent Gondwana, ...

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

During a geological blink of an eye, glaciers formed over the supercontinent Gondwana, drying out many of the vast, shallow ...

Crocodiles and alligators are usually the apex predators in whatever environment they live in. Their massive jaws and armored ...

The ocean’s calendar is being rewritten, and human activity is holding the pen. Researchers at the Woods Hole Oceanographic ...