Protoperidinium marieae Harland in Harland et al., 1991, p.653, figs.4j–l. Holotype: Harland et al., 1991, fig.4j. NOW Lejeunecysta. Originally Protoperidinium subgenus Protoperidinium section Lejeunecysta (section name not validly published), subsequently (and now) Lejeunecysta. Age: early Pleistocene.