New Campanian to Danian dinoflagellate cyst zonation in the North and East of Belgium and the South-East of the Netherlands. The palynological study of 75 samples from Campanian to Danian chalks in the Hallembaye quarry, the Turnhout borehole (Belgium), and in the Beutenaken quarry (the Netherlands) shows that the material is well preserved and exceptionally rich in species and specimens, and provides a high biostratigraphic resolution. These deposits were subdivided in nine interval-zones, eleven subzones and four zonules. Among them eight zones, ten subzones and two zonules are newly defined below the Danea californica Zone. In stratigraphical ascending order are found: the Zone A of the Lower Campanian, followed by the Xenascus wetzelii. Areoligera coronata and Samlandia mayii zones of the Upper Campanian, the Membranilarnacia liradiscoides,Pervosphaeridium tulniloaculeatum, Deflandrea galeata and Hystrichostrogylon coninckii zones of the Maastrichtian and the Danea californica Zone of the Danian. The X. wetzelii Zone is subdivided in the Exochosphaeridium? masurii and Hystrichokolpoma gamospina subzones. The E? masurii Zone it self is subdivided in two zonules (a and b). The Membranilarnacia liradiscoides Zone is subdivided in the Alterbidinium varium and Cladopyxidium paucireticulation subzones. The P. tubuloaculeatum, D. galeata and H. coninckii zones both are subdivided in twosubzones a and b.