More than 17,000 species are known to have survived until the mega-extinction that ended the Permian period 251 million years ago. A predator of the Cambrian was the giant, shrimplike Anomalocaris ...

The fossils, which are more than 500 million years old, were collected in the ... and thus atmospheric oxygenation during the Cambrian period.

Then, between about 570 and 530 million years ago, another burst of diversification ... Recent research suggests that the period prior to the Cambrian explosion saw the gradual evolution of ...

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 ...

The Ediacaran-Cambrian transition, occurring approximately 540 million years ago, marked a dramatic diversification of life .

As its name implies, this includes all of geological time prior to the Cambrian period. Hadean Era ... the planet over its first half-billion years, making it entirely uninhabitable.

Until recently the fossils of organisms that lived earlier than the Cambrian period of 500 to 600 million years ago were rare. Now a wealth of such fossils has been found in South Australia ...

Then, about 540 million years ago, something else changed ... dramatically. It was the time of the Cambrian Explosion, an eruption of life when Earth’s very first animals began appearing in the ...

During the Cambrian Period (538-485 million years ago)—a time of explosive life diversification—megacheirans, like Lomankus, ...

Imagine traveling back in time to Earth roughly 500 million years ago, right in the middle of the Cambrian Explosion. It would be like visiting an alien planet! The Blue Planet was in its "insecty ...

"The Tonto Group holds a treasure trove of sedimentary layers and fossils chronicling the Cambrian Explosion some 540 million years ago ... at this pivotal geologic period, yet had no knowledge ...