Palaeoperidinium pyramidale

"pyramidale" (Harris, 1974, p.163, pl.1, figs.5–11) Lentin and Williams, 1976, p.111.  Holotype: Harris, 1974, pl.1, fig.5.  NOW Morkallacysta.  Originally (and now) Morkallacysta, subsequently Palaeoperidinium.  Age: Paleocene.

Parent: Palaeoperidinium