Magnetostratigraphy of the five Leg 207 sites provides an enhanced chronologic control for the Latest Cretaceous–Eocene of Demerara Rise. Thermal demagnetization of ~800 minicores collected from the sites removed a downward-directed overprint induced during the drilling process and a low-temperature component that was effectively removed by heating >200°C. The magnetostratigraphy interpretations and biostratigraphic constraints at the five sites enabled identification and commonly a detailed delimiting of Chrons C18n–C27r of the Middle Eocene–Late Paleocene and of Chrons C29r–C31r of the Maastrichtian–Campanian.