The Middle Badenian radiolarian horizon had been characterized. Life conditions of these organisms have been discussed. Thirty-eight radiolarian species have been described including seven new ones: Cenosphaera micropora sp.n., Caryosphaera sphaerica sp.n., Hexacontium miocenicum sp.n., Cenellipsis minuta sp.n., Cromyocarpus ovalis sp.n., Cenodiscus discoides sp.n., and Dictyocoryne triangularis sp.n.