Abstract: In this study, the Mollusca fauna (Gastropoda and Bivalvia) from two drilling cores, each 12 meters deepand obtained in Taşköprü village (located between Lake Akşehir and Lake Eber), was systematically examined for the first time, and the paleobiogeographic distribution of the fauna was documented. From the systematically collected samples obtained from the drilling cores, eight genera and eight species belonging to the class Gastropodaof the phylum Mollusca were identified, including Valvata piscinalis (O. F. Müller, 1774), Valvata sp., Bithyniapseudemmericia Schütt, 1964, Bithynia pseudemmericia operculum, Graecoanatolica lacustristurca Radoman, 1973,Laevicaspia caspia (Eichwald, 1838), Laevicaspia kolesnikoviana (Logvinenko & Starobogatov, 1966), Laevicaspia lincta (Milaschewitsch, 1908), Laevicaspia sp., Lymnaea sp., Stagnicola sp., Radix auricularia (Linnaeus, 1758),Radix sp., Gyraulus parvus (Say, 1817), and Gyraulus sp. Additionally, three genera and six species belongingto the class Bivalvia were identified, including Euglesa casertana (Poli, 1791), Euglesa personata (Malm, 1855),Pisidium amnicum (O. F. Müller, 1774), Pisidium jassiensis Cobălcescu, 1883, Pisidium sp., Dreissena iconicaSchütt, 1991, Dreissena polymorpha (Pallas, 1771), and Dreissena sp. Comparison with previous studies from theLakes Region shows that the occurrence of V. piscinalis, B. pseudemmericia, G. lacustristurca, R. auricularia, G.parvus, E. casertana, E. personata, P. amnicum, P. jassiensis, and D. iconica – species previously reported from sediments of the Konya Closed Basin and Lakes Eğirdir, Beyşehir, Burdur, and Suğla – suggests that during the LatePleistocene there may have been a physical connection among these basins, that these lakes developed under similar paleoenvironmental conditions.