Terminal Cretaceous Extinction Scenario for a Catastrophe

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Science  14 Dec 1979:
Vol. 206, Issue 4424, pp. 1272-1276
DOI: 10.1126/science.206.4424.1272


All the biotic changes that occurred at the end of Cretaceous time, including the extinction of the dinosaurs, may be the result of a single terrestrial catastrophe. The Arctic spillover model, first proposed to explain the marine extinctions, would have caused a rapid and intense change in the earth's climate including a lowering of temperature and of precipitation. This change in climate may have triggered a series of ecological disasters that included the radical change in the distribution of vegetation on the earth as well as the extinction of the dinosaurs.