Ifecysta pachyderma
From dinoflaj3
*pachyderma Jan du Chêne and Adediran, 1985, p.20, pl.15, figs.1–11; text-figs.6a–6i. Holotype: Jan du Chêne and Adediran, 1985, pl.15, figs.1–2; text-figs.6a–b; Fensome et al., 1995, figs.1–2,6–7 — p.1637. Age: late Paleocene–early Eocene.
