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 ...

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 ...

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 ...

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 ...

PASADENA, Calif.–Geologists have uncovered evidence in the oil fields of Oman that explains how Earth could suddenly have changed 540 million years ago to favor the evolution of the single-celled life ...

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.

About 536 million years ago, in the early Cambrian period, an abundance of different species of millimeter-scale marine organisms thrived in continental shelf habitats around the world. Today, their ...