113-Million-Year-Old Fossils Link Volcanic CO2 to Ancient Plankton Extinction
Scientists have discovered that a major extinction of planktic foraminifera, tiny shell-forming marine organisms, occurred due to ocean acidification triggered by massive volcanic eruptions 113 million years ago. The volcanic activity released large amounts of carbon dioxide, which made ocean waters more acidic and disrupted the ability of these organisms to form shells. Researchers uncovered this previously missing evidence by analyzing calcium isotopes preserved in ancient fossils. The study sheds light on how rapidly changing ocean chemistry can devastate marine life. Experts say the findings carry important implications for understanding the potential consequences of modern-day ocean acidification.
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