Operculodinium megagranum
From dinoflaj3
?megagranum Head in Head and Westphal, 1999, p.13,15, fig.10, nos.14–15; fig.12, nos.1–9. Holotype: Head and Westphal, 1999, fig.12, nos.1–3. Questionable assignment: Head and Westphal (1999, p.13). Age: late late Pliocene.
Parent: Operculodinium