Hemisphaeridium fenestratum
From dinoflaj3
*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: middle Eocene (see Aubry, 1986).
