Coccolith calcite time capsules preserve a molecule-specific record of pCO2

Harry-Luke Oliver McClelland, Washington University in St Louis, St. Louis, MO, United States, Ann Pearson, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States, Michael Hermoso, Sorbonne Université, Institut des Sciences de la Terre de Paris, UMR CNRS 7193 ISTeP, Paris, France, Elise Wilkes, Harvard University, Cambridge, MA, United States, Renee B. Y. Lee, University of Oxford, Oxford, United Kingdom and Rosalind E M Rickaby, University of Oxford, Earth Sciences, Oxford, United Kingdom