An exceptional flora of calcareous dinoflagellates from the middle Miocene of the Vienna Basin, SW Slovakia

Novel and diverse associations of calcareous dinoflagellate cysts have been discovered in Late Badenian (late Middle Miocene) coastal marine sediments within the Vienna Basin. Samples derive from a clay pit near Devínska Nová Ves, a borough of Bratislava, Slovakia, in which the Late Badenian lectotype section is exposed. Seventeen different taxa, many of them new and of abnormal morphology, have been distinguished and assigned to ten genera. The following seven taxa are newly introduced from the Devínska Nová Ves clay pit: four genera comprising five new species, i.e., Calciconus irregularis, Juergenella remanei, Cylindratus borzae, Posoniella pustulata, Posoniella campestris, one new varietas, i.e., Calcicarpinum perfectum var. poratum, and one new forma, i.e., Caracomia arctica forma duplicata. In addition, the following new combinations have been made: Posoniella tricarinelloides (Versteegh), Juergenella ansata (Hildebrand-Habel and Willems), and Juergenella granulata (Kohring). The genus Melodomuncula Versteegh is emended based on a new interpretation of its tabulation, and the genus Pirumella Bolli is emended because the concept used for the genus is not in accordance with the original description.