*Williamsidinium banksianum Lentin, 1983, p.150, pl.1, figs.1a-b,2-7; text-fig.1.
TYPE: Holotype: Lentin, 1983, pl.1, figs.1a-b; Fensome et al., 1993a, figs.1-2 - p.963.
AGE: Maastrichtian.