Biomarker 7: Bolivinoides strigillatus FDO

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The biomarker is found in the Jukes Formation (Early Campanian, pilula Zone). The FDOs of Reussella kelleri and Gavelinella cristata accompany the biomarker in the Southern North Sea.

Correlation: This biomarker can be placed just below the top of BGS foraminiferal Biozone 19 (Wilkinson, 2000).