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Keller, G. 2011. “Cretaceous-Tertiary Mass Extinction in Marginal and Open Marine Environments: Texas, U.S.A., and Tunisia”. In The End-Cretaceous Mass Extinction and the Chicxulub Impact in Texas, SEPM, Special Publication, No. 100:197-226. Tulsa: SEPM (Society for Sedimentary Geology).