Beginning around 542 million years ago, a profusion of animals with shells and skeletons began to appear in the fossil record. So many life forms appeared during this time that it is often referred to ...

Timeline: The Cambrian Explosion and Animal Diversity Let’s go back 541 million years. Earth was about to throw the most spectacular evolutionary party in history. For billions of years, life had been ...

Around half a billion years ago, life on Earth went through a rapid transformation, diversifying into almost all of the major animal groups we see today. How and why the Cambrian explosion occurred ...

(Phys.org) -- The oceans teemed with life 600 million years ago, but the simple, soft-bodied creatures would have been hardly recognizable as the ancestors of nearly all animals on Earth today. Then ...

To continue reading this content, please enable JavaScript in your browser settings and refresh this page. Preview this article 1 min A look back at the efforts ...