Saturnodinium pansum
From dinoflaj3
pansum (Stover, 1977, p.78–79, pl.2, figs.32–38) Brinkhuis et al., 1992, p.246. Holotype: Stover, 1977, pl.2, figs.34–36. Originally Thalassiphora?, subsequently (and now) Saturnodinium. Age: middle-late Oligocene.