Herngreen et al., 1986
From dinoflaj2
Herngreen, G.F.W., Felder, W.M., Kedves, M. and Meessen, J.P.M.T., 1986: Micropaleontology of the Maastrichtian in borehole Bunde, The Netherlands. Review of Palaeobotany and Palynology, v.48, p.1-70, pl.1-13.
