Imagine stumbling upon a hidden vault that preserves whispers from a world over half a billion years ago—a time when life on ...

Imagine drifting through a prehistoric sea more than 500 million years ago. The water teems with bizarre creatures, but none ...

This daily feast-and-famine cycle in oxygen availability created an intense physiological challenge for early animals, forcing them to develop adaptations to handle fluctuations in nutrients. For ...

This stunning and unique evolutionary flowering is termed the "Cambrian explosion," taking the name of the geological age in whose early part it occurred. But it was not as rapid as an explosion ...

A remarkable fossilized larva has been discovered by scientists with its brain and guts still intact. The fossilized creature ...

Focused on Cambrian fossils, the study reanimates a species long trapped in the pages of forgotten paleontology.

In a quiet part of what is now South Australia, more than half a billion years ago, life was locked in battle. The ocean ...

The Cambrian Explosion saw an incredible diversity of life emerge, including many major animal groups alive today. Among them were the chordates, to which vertebrates (animals with backbones ...

This is an illustration of marine fossils that have existed since the Cambrian. Represented taxa include brachiopods, trilobites, ammonites, bivalves, and decapods. Disclaimer: AAAS and EurekAlert!

This stunning and unique evolutionary flowering is termed the "Cambrian explosion," taking the name of the geological age in whose early part it occurred. But it was not as rapid as an explosion ...