Olde, K., Jarvis, I., Pearce, M., Ulicný, D., Tocher, B., Trabucho-Alexandre, J., Gröcke, D.R., "A revised northern European Turonian (Upper Cretaceous) dinoflagellate cyst biostratigraphy: Integrating palynology and carbon isotope events", Review of Palaeobotany and Palynology, 2015