Morkallacysta pyramidalis
From dinoflaj3
*pyramidalis Harris, 1974, p.163, pl.1, figs.5–11. Holotype: Harris, 1974, pl.1, fig.5. Originally (and now) Morkallacysta, subsequently Palaeoperidinium. Stover and Evitt (1978, p.113–114) retained this species in Morkallacysta. Age: Paleocene.
Parent: Morkallacysta