The evolution of Phanerozoic seawater – Isotope paleothermometry finds consensus on Early Paleozoic warmth and constant seawater δ18O

Ethan L Grossman, Texas A&M University, Department of Geology and Geophysics, College Station, United States, Gregory A Henkes, Harvard University, Department of Earth and Planetary Sciences, Cambridge, MA, United States, Benjamin H Passey, Johns Hopkins University, Baltimore, MD, United States, Brock Shenton, ExxonMobil Houston, Exploration Company, Houston, TX, United States, Thomas E. Yancey, Texas A & M University, Department of Geology and Geophysics, College Station, TX, United States and Alberto Perez-Huerta, The University of Alabama, Department of Geological Sciences, Tuscaloosa, AL, United States