Foraminiferal Biostratigraphy of the Upper Campanian–Maastrichtian of the Beshkosh Section, Southwestern Crimea

Abstract

New data on the taxonomic composition and stratigraphic distribution of benthic and planktonic foraminifera in the Campanian–Maastrichtian interval of the Beshkosh section (Southwestern Crimea) are presented. Samples were collected according to “sample-to-sample” system for different types of analysis. According to the foraminiferal analyses, zones and beds were established. Angulogavelinella gracilis LC 18 Zone, Bolivinoides draco LC 21 Zone, Brotzenella praeacuta LC 22 Zone and Beds with Gavelinella sahlstroemi by benthic foraminifera and Beds with Laeviheterohelix glabrans, Guembelitria cretacea Zone by planktonic foraminifera were identified. All biostratons are correlated with magnetostratigraphics, palynomorphs and macrofauna’s events. Beds and zones by benthic foraminifera are correlated with Campanian–Maastrichtian bioevents in sections of the European paleobiogeographic region. Planktonic foraminifera data are compared with International Stratigraphic Scale (Tethys region) and the regional stratigraphic scheme of Poland. For the first time, 15 species of 9 planktonic foraminifera genera and 38 species (25 of which are for the first time) of 25 benthic foraminifera genera in the Beshkosh section have been identified.