Operculodinium megagranum

?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