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Well-preserved opal planktic assemblages containing diatom and silicoflagellate species were discovered in the finely laminated sapropels S5 and S7 from Site 67, core GeoTüKL51 during “RV Meteor”-Cruise 40, Leg 4 (34° 48 N; 27° 17 E). The siliceous microflora, composed quasi-exclusively of warm water species, is here studied for taxonomy, stratigraphy and ecology, as well as for quantitative distribution...
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