The present study deals with the modern taxonomical consideration of the Paleocene -Eocene twenty smaller benthic foraminiferal species belonging to twenty genera, were identified and illustrated from central Black Sea Region of Turkey, which represent good example of the Northern Tethyan benthic foraminiferal assemblage. Eighteen of these species are believed here as new: Trochamminoides turkiana, Spiroplectinella gurayi, Dorothia turkiana, Enantiodentalina turkiana, Neoflabellina turkiana, Lagena turkiana, Aragonia turkiana, Stilostomella turkiana, Globocassidulina turkiana, Ellipsoglandulina turkiana, Planulina turkiana, Cibicidoides turkiana ,Cibicides turkiana, Nuttallides turkiana, Nonion turkiana, Oridorsalis turkiana, Osangularia turkiana and Anomalinoides turkiana. A comparative correlation between the recorded species from Turkey in Northern Tethys with other species in the other parts of the Southern Tethys indicates open marine connections, and wide paleogeographic distribution of the ancestral Tethys, which is connected with the ancestral Atlantic and Indian Oceans via Mediterranean Sea in the Early Paleogene. In general, the benthic foraminifera is predominantly considered to be related to open marine environment, photic zone, middle- upper neritic environment (100-200 m water depth), which shows an affinity with Midway-Type Fauna (MTF).