Taphonomical analysis of foraminiferal assemblages from the Miocene of the Slovak part of Central Paratethys: applications in paleoecological and paleogeographical analysis; Foraminifera from the Rzehakia (Oncophora) Beds in the Central Paratethys: comparison of assemblages from the South Slovak Basin, northern Hungary and the Upper Austria; Foraminiferal assemblages in basin evolution: cyclicity in foraminiferal assemblages, significance of postmortem transport and resedimentation of foraminiferal tests, foraminiferal assemblages and paleogeographic reconstructions (Oligocene and Miocene of the South Slovak Basin); Foraminifera from the section Skela (Lower Miocene of the Kertsch peninsula): biostratigraphy, correlation with the Central Paratethys; Pioneer investigations of the Silurian and Devonian Foraminifera from the Barrandien area.