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A definitive geological timeline shows that a series of massive volcanic explosions 66 million years ago spewed enormous amounts of climate-altering gases into the atmosphere immediately before and during the extinction event that claimed Earth's non-avian dinosaurs, according to new research from Princeton University.
Online this week in Science (http://scim.ag/BSchoene), volcanism gets a big boost, and so does one of the most contentious figures in the debate, Princeton University paleontologist Gerta Keller. In the paper, Schoene, Keller, and colleagues report precise dates for the main phase of Deccan volcanism.