Charlesdowniea variabilis
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"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. NOW Michouxdinium. Originally Kisselevia, subsequently Charlesdowniea, thirdly (and now) Michouxdinium. Age: middle Eocene (see Aubry, 1986).
