Data for: The Eocene–Oligocene transition in the C-isotope record of the carbonate successions in the Central Mediterranean

Carbon and oxygen isotope ratios of bulk carbonate rocks of the Santo Spirito Formation, upper Eocene-lower Oligocene (Majella Mountain, Central Apennines). Total Organic Carbon isotope ratios of marly samples of the Massignano section, GSSP of the Eocene-Oligocene boundary.