Learn more about a time period marked by an intense burst of evolution. 3 min read The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known.

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

The question of how so many immense changes occurred in such a short time is one that stirs ... Recent research suggests that the period prior to the Cambrian explosion saw the gradual evolution ...

Learn more about the time period that took place 488 to 443 million ... animals evolving in place of those that didn't survive the Cambrian. Chief among them were the squidlike nautiloids, a ...

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 ...

For over a century, scientists have been puzzled by a mysterious fossil called Helmetia expansa, an ancient arthropod from ...

Visitors at the Miraculous Life in the Ancient Oceans: Exhibition of Premium Fossils from the Cambrian Chengjiang Biota ... it was the largest hunter of its time. "Besides its size, its ...

A fossil analysis suggests that the yunnanozoan, a wormlike fish that flourished around 520 million years ago, sported structures that were the precursors of the head and jaws of modern vertebrates. A ...

The question of how so many immense changes occurred in such a short time is one that stirs ... Recent research suggests that the period prior to the Cambrian explosion saw the gradual evolution ...