Operculodinium alsium

alsium Matsuoka and Bujak, 1988, p.64-65, pl.8, figs.7,8a-b,9.  Holotype: Matsuoka and Bujak, 1988, pl.8, figs.8a-b; Head, 1994b, pl.8, figs.6-9.  Age: Late Miocene.

Parent: Operculodinium