This study presents new stratigraphical data on the sediments of the Lower Tertiary sequence outcropping in the northern Isparta Angle, Southwest Anatolia. Those data, which are based on field observations, foraminifera and nannofossil studies, and sedimentological findings, contribute to the paleoenvironmental and structural interpretations. Reworking of fossils that was neglected in previous work is an important factor for understanding and clarifying the Early Tertiary geological evolution of the region. This investigation particularly focuses on the significance of reworking in the stratigraphic record. T