Operculodinium spinigerum
From dinoflaj3
"?spinigerum" Brideaux, 1977, p.30, pl.12, figs.8–9; pl.13, figs.1–11. Holotype: Brideaux, 1977, pl.12, figs.8–9; pl.13, figs.1–4. Originally Operculodinium?, subsequently Protoellipsodinium. Questionable assignment: Brideaux (1977, p.30). Taxonomic senior synonym: Protoellipsodinium clavulus, according to Duxbury (1983, p.53). Age: Barremian.
Parent: Operculodinium