Hystrichosphaera perforata
From dinoflaj3
"perforata" Davey and Williams, 1966a, p.41, pl.5, fig.7. Holotype: Davey and Williams, 1966a, pl.5, fig.7; Bujak et al., 1980, pl.5, figs.2–3. NOW Spiniferites. Originally Hystrichosphaera, subsequently (and now) Spiniferites. Age: early Eocene.
Parent: Hystrichosphaera