FROM 508 MILLION YEARS AGO TO TODAYPreserved in the Burgess Shale of British Columbia, the worm Canadia spinosa was part of an explosion in biodiversity during the Cambrian period that gave birth ...

emphasizing the strong relationship between Earth's temperature and atmospheric carbon dioxide levels. The Phanerozoic Eon began around 540 million years ago, marked by the Cambrian Explosion—a ...

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 ... marine worms buried during undersea mud avalanches.

Researchers have discovered that Earth's days once extended by more than two hours, due to the moon drifting farther away from Earth during two ... with the Cambrian explosion, a time of dramatic ...