Phanerozoic pCO2 recorded by the plants that used it: refinement, independent validation and multi-proxy comparison of a physiological model.

Peter Franks, University of Sydney, Sydney, NSW, Australia, Dana L Royer, Wesleyan University, Department of Earth and Environmental Sciences, Middletown, CT, United States, Jennifer Kowalczyk, Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, United States and Joseph Milligan, Wesleyan University, Middletown, CT, United States