May 6 (UPI) --During the Cambrian explosion, thousands of new species appeared during a relatively short amount of time. The earliest forms of many modern species first emerged during the Cambrian ...

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 ...

Rare fossils found along the Colorado River 'give us a fuller picture of what life was like during the Cambrian period,' says ...

The most recent 12 percent of time on Earth is a striking anomaly when compared with the great bulk of our planet’s evolution. After 3 billion years or more of Earth as a microbial world, cells found ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Fossils can help us peer deep into the planet’s past. But that ...

The explosion of animal life in Earth's oceans half a billion years ago during and after the Cambrian Period is commonly attributed to a substantial and sustained rise of free oxygen (O2) in seawater.