Microdinium dentatum subsp. dentatum
From dinoflaj2
"subsp. dentatum". Autonym. Holotype: Vozzhennikova, 1967, pl.38, figs.2a-e; Lentin and Vozzhennikova, 1990, pl.12, figs.5-7; text-fig.59. Now redundant. Parent: Microdinium dentatum