A new method allows scientists to reconstruct carbon dioxide levels and photosynthesis from fossilized tooth enamel. A surprising new line of evidence is providing fresh insights into Earth’s ancient climate. Fossilized dinosaur teeth reveal that the atmosphere during the Mesozoic era (between 252 and 66 million years ago) contained much higher levels of carbon dioxide […]



Summary

Scientists have developed a novel technique to reconstruct past carbon dioxide levels and photosynthetic activity using fossilized tooth enamel. By analyzing dinosaur teeth from the Mesozoic era (252-66 million years ago), researchers have discovered significantly higher atmospheric carbon dioxide concentrations than previously thought. This new methodology provides a valuable and independent line of evidence for understanding ancient climates and potentially refining climate models used to predict future environmental changes. The findings contribute to a more nuanced picture of Earth’s climate history.

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