Thurow et al., 1988
From dinoflaj3
Thurow, J., Moullade, M., Brumsack, H.-J., Masure, E., Taugourdeau-Lantz, J. and Dunham, K., 1988: 35. The Cenomanian/Turonian boundary event (CTBE) at Hole 641A, ODP Leg 103 (compared with the CTBE interval at site 398). In: Boillot, G. et al., Ocean Drilling Program, Scientific Results, Proceedings, Leg 103, p.587-634, pl.1-8.