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.

The Cambrian Explosion: A Burst of Life and Innovation The Cambrian period, about 541 to 485 million years ago, was a time of incredible evolutionary change. In just a few million years ...

Internal, genetic factors were also crucial. Recent research suggests that the period prior to the Cambrian explosion saw the gradual evolution of a "genetic tool kit" of genes that govern ...