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 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