Biostratigraphical long-distance correlation of the Lower Maastrichtian between Boral and Tethyan oceanic realms: NW Germany, E Atlantic and Bavaria

A three meter thick horizon in the white chalk of the Lagerdorf-Kronsmoor-Hemmoor section (northwestern Germany), biostratigraphically characterized by the co-occurrence of Belemnella gracilis, Belemnella sumensis, Belemnitella pulchra, Bolivinoides draco miliaris, Bolivinoides draco draco and the recognitionn of the Standard Nannofossil Zone CC24 can be correlated precisely with 7 m in the succession at DSDP Site 548 (northeastern Atlantic) and the 2 m belemnite horizon of the Inoceramus-Marls (Ultrahelveticum) near Siegsdorf (Bavaria).