Operculodinium eirikianum var. crebrum
From dinoflaj3
var. crebrum De Schepper and Head, 2008, p.103–104,106, pl.1, figs.1–20. Holotype: De Schepper and Head, 2008, pl.1, figs.1–4. Age: Piacenzian.
Parent: Operculodinium eirikianum