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Dataset citation provided by publisher
Keller, G et al. (1993): (Table 1b) Relative percent abundance of planktic foraminiferal species at DSDP Site 77-536, Late Cretaceous. doi:10.1594/PANGAEA.712874, In Supplement to: Keller, Gerta; MacLeod, Norman D; Lyons, JB; Officer, CB (1993): Is there evidence for Cretaceous-Tertiary boundary-age deep-water deposits in the Caribbean and Gulf of Mexico? Geology, 21(9), 776-780, doi:10.1130/0091-7613(1993)021<0776:ITEFCT>2.3.CO;2
PANGAEA - Publishing Network for Geoscientific and Environmental Data:
(Table 1b) Relative percent abundance of planktic foraminiferal species at DSDP Site 77-536, Late Cretaceous.
Accessed via http://www.gbif.org/dataset/70e43a10-f762-11e1-a439-00145eb45e9a on 2015-07-07