Hystrichostrogylon membraniphorum subsp. granulatum
From dinoflaj2
subsp. granulatum Heilmann-Clausen in Heilmann-Clausen and Costa, 1989, p.468, pl.18, figs.1-3. Holotype: Heilmann-Clausen and Costa, 1989, pl.18, fig.3. Age: Early Eocene. Parent: Hystrichostrogylon membraniphorum