Charlesdowniea variabilis
From dinoflaj2
variabilis (Bujak in Bujak et al., 1980, p.67, pl.17, figs.1-6; text-fig.16) Lentin and Vozzhennikova, 1989, p.228. Holotype: Bujak et al., 1980, pl.17, figs.1-3. Originally Kisselevia, subsequently (and now) Charlesdowniea. Age: Mid Eocene (see Aubry, 1986).
Parent: Charlesdowniea