Earth’s history is filled with incredible milestones, and the emergence of the first animals is one of the most captivating.

With eyes like searchlights, a mouth of razor-sharp plates, and grasping appendages ready to snatch anything in reach, this ...

Learn more about a time period marked by ... of evolution ever known. The Cambrian Explosion saw an incredible diversity of life emerge, including many major animal groups alive today.

All animal evolution for ... Life was flourishing long before the Cambrian "explosion". The question of how so many immense changes occurred in such a short time is one that stirs scientists.

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 ...

Learn more about the time period that took place ... remained confined to the seas with new animals evolving in place of those that didn't survive the Cambrian. Chief among them were the squidlike ...

All animal evolution for ... Life was flourishing long before the Cambrian "explosion". The question of how so many immense changes occurred in such a short time is one that stirs scientists.