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 ...

3 min read The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known. The Cambrian Explosion saw ... More than 17,000 species are known to have ...

It was the time of the Cambrian Explosion, an eruption of life when ... This put immense selection pressure on species, resulting in a rapid evolutionary arms race: prey evolved elaborate defenses ...