The volume contains descriptions of foraminifera from the Campanian and Maastrichtian deposits of the Lublin Upland (Eastern Poland). Of the 240 species described 22 are new. These are: Hormosina telatynensis sp. n., Arenobulimina minutissima sp. n., Bolivina aleksandrae sp. n., Bolivina praecrenulata sp. n., Bolivina witwickae sp. n., Bolivinoides dentatus sp. n., Praebulimina dorohuczensis sp. n., Pseudowigerina telatynensis sp. n.,
Biedafranciszkina polonica sp. n., Ellipsodimorphina pozaryskae sp. n., Allomorphina polonica sp. n., Allomorphinella lublinensis sp. n.,
Quadrimorphina varsoviensis sp. n., Sliteria varsoviensis sp. n., Stensioeina bella sp. n., Stensioeina pulchra sp. n., Anomalina incognita sp. n.,
Gavelinella postthalmanni sp. n ., Guembelitria ornata sp. n., Heterohelix suwalkensis sp. n., Heterohelix varsoviensis sp. n., Hedbergella telatynensis sp. n. Two new genera: Biedafranciszkina gen. novo and Sliteria gen. novo and one new family: Biedafranciszkinidae f. novo are also designated. Forminiferal zones characteristic for the Upper Cretaceous of the Polish Lowlands have been distinguished and correlated with macro- and microfauna zones established previously for the Cretaceous deposits from central Poland and from other regions of the world.