Inversidinium caudatum

"caudatum" Benson, 1976, p.218,220, pl.13, figs.4-6. Holotype: Benson, 1976, pl.13, figs.4-6. NOW Palaeotetradinium. Originally Inversidinium, subsequently (and now) Palaeotetradinium. Age: Late Maastrichtian-Early Paleocene.