First, organisms may not have sequestered and ... Life was flourishing long before the Cambrian "explosion". The question of how so many immense changes occurred in such a short time is one ...

First, organisms may not have sequestered and ... Life was flourishing long before the Cambrian "explosion". The question of how so many immense changes occurred in such a short time is one ...

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The Cambrian Explosion saw an incredible diversity of ... were among the most successful organisms ever to populate Earth. These familiar marine arthropods first arose about 545 million years ...

The first large, multi-celled organisms appeared ... It was the time of the Cambrian Explosion, an eruption of life when Earth’s very first animals began appearing in the fossil record ...

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 ...