Comparing the boron isotope proxy for atmospheric CO2 in two species of planktic foraminifera across the late Neogene

Lloyd Bruce Anderson1, Baerbel Hoenisch1, Pratigya J Polissar2 and Samuel R. Phelps1, (1)Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, (2)University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States