Hystrichosphaeropsis complanata
From dinoflaj2
complanata Eisenack, 1965b, p.153-154, pl.14, figs.5a-b,6-7; pl.15, figs.5a-b; text-figs.2a-b,3. Holotype: Eisenack, 1965b, pl.14, figs.5a-b; text-figs.2a-b; Jan du Chêne et al., 1986a, pl.46, figs.2-3 and pl.48, figs.1-3. Age: Late Eocene-Early Oligocene.
Parent: Hystrichosphaeropsis