Leptocytheridae Hanai and Cytherideidae Sars and their genera are well known biostrat graphically and choronostratigraphically in all of the Paratethys basins during the Pontian age. The fauna described includes fourteen species, five known, five yet unnamed and four new species which belong to the above families. The species are Leptocythere (Amnicythere) multituberculata, Leptocythere (Leptocythere) cymbula, Euxinocythere 'Maeotocythere) bosqueti, Cytherissa bogatschovi, Pontocythere bayramensis, Euxinocythere (Maeotocythere) krstici n.sp., Cyprideis krstici n.sp., Euxinocythere (Maeotocythere) pontica n.sp., Cytherissa pannonica n.sp., Cyprideis sp., Euxinocythere (Maeotocythere) sp., Leptocythere (Amnicythere) sp., Cytherissa sp.1 and Cytherissa sp. 2. On the basis of the ecological properties of Cyprideis, Leptocythere, Euxinocythere, Cytherissa and Pontocythere and the other observed Ostracoda in this faunal assemblage, the paleoenvironments include shallow marine, and littoral-brackish water (transitional) facies. All of these known species are related to the Eastern Paratethys (especially Euxinian and Caspian Basins) bioprovince.