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Published online 18 May 2009 |
Nature
| doi:10.1038/news.2009.485
Corrected online: 21 May 2009
News
Cambrian explosion changed ocean chemistry
Mud stirred up by sea-floor animals may have stoked global sulphate levels.
A little more than 500 million years ago, something put the evolutionary pedal to the metal, and the stately, subdued pace of animal life on Earth revved up. Alongside this spurt in speciation — known as the Cambrian explosion — came a jump in the concentration of sulphate in the world's oceans.
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