Crouch et al., 2014
From dinoflaj3
Crouch, E.M, Willumsen, P.S., Kulhanek, D.K. and Gibbs, S.J., 2014: A revised Palaeocene (Teurian) dinoflagellate cyst zonation from eastern New Zealand. Review of Palaeobotany and Palynology, v.202, p.47-79, pl.1-8.