Ellen Thomas, research professor of earth and environmental sciences is the co-author of "End-Cretaceous Marine Mass Extinction not Caused by Productivity Collapse," published in (PNAS) Proceedings of the National Academy of Sciences; "Blake Outer Ridge: late Neogene variability in paleoenvironments and deep-sea biota," published in Palaeogeography, Palaeoclimatology, Palaeoecology, 302: 435-451; "Seawater calcium isotopic ratios across the Eocene-Oligocene Transition, published in Geology, 39: 683-686; "A core-top calibration of B/Ca in the benthic foraminifera Nuttallides umbonifera and Oridorsalis umbonatus: reconstructing bottom water carbonate saturation," published in Earth and Planetary Science Letters, 310: 360-368; "Ocean deoxygenation: past, present and future," published in EOS Transactions AGU, 92: 409-410, all in 2011.