The detailed analysis of molluscan and planktonic foraminiferal fauna in the Oligocene Çardak-Dazkırı subbasin, in northeastern Denizli province (western Turkey) allowed accurate dating of the deposits, together with interpretation of their depositional environments. | Oligocene history of the Çardak-Dazkırı sub basin (Denizli, SW Turkey): Integrated molluscan and planktonic foraminiferal biostratigraphy