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

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 ... the opportunity for the Cambrian explosion to occur. Internal, genetic factors were also crucial. Recent research suggests that the period prior to the Cambrian explosion ...

visitors can follow fossil evidence tracing the evolution of life during the Cambrian period — the first geological period of the Paleozoic era — which lasted from 541 million to 485 million ...