Most abundant Middle Miocene rotaliinas (suborder Rotaliina, Foraminifera) of Kozjansko (Eastern Slovenia)

This research presents the most numerous Middle Miocene foraminifera of the suborder Rotaliina from the Planina syncline in Kozjansko. 85 species and 2 subspecies have been identified.The species that show abundance in samples are: Angulogerina angulosa,Trifarina bradyi, Sphaeroidina bulloides, Cibicidoides ungerianus, Nonion commune, Melonis pompilioides, Pullenia bulloides, Heterolepa dutemplei, Hansenisca soldanii and Hanzawaia boueana.