Hemisphaeridium fenestratum
From dinoflaj2
*fenestratum Bujak in Bujak et al., 1980, p.56,58, pl.15, figs.7-9. Holotype: Bujak et al., 1980, pl.15, fig.7; Fensome et al., 1993a, fig.1 - p.1187. Age: Mid Eocene (see Aubry, 1986).
Parent: Hemisphaeridium