Zonation par acritarches du Frasnien superieur-Famennien inferieur dans les bassins de Dinant, Namur, Herve et Campine (Devonien superieur de Belgique)

Five acritarch Zones are formally described from the Upper Frasnian-Lower Famennian of Belgium. These are based on the stratigraphic ranges of 14 species and varieties, 5 of which are new: Baltisphaeridium basiconstrictum n. sp., Baltisphaeridium medium Stockmans & Willière, 1974 var. praemedium nov. var., Hercyniana sprucegrovensis (Staplin) Vanguestaine in Kimpe et al. , 1978 var. attonita nov. var., Villosacapsula globosa n. sp. and Visbysphaera (?) fecunda n. sp.The stratigraphic significance of these new acritarch Zones has been deduced from six sections (at Focant, Senzeilles, Sinsin... Mehr ...