Phthanoperidinium geminatum

geminatum Bujak in Bujak et al., 1980, p.72,74, pl.19, figs.8-12; text-figs.20D,22A.  Holotype: Bujak et al., 1980, pl.19, figs.9-11.  Age: Mid Eocene (see Aubry, 1986).

Parent: Phthanoperidinium