Phthanoperidinium crenulatum

crenulatum (de Coninck, 1975, p.96, pl.17, figs.5-7,12-15) Lentin and Williams, 1977b, p.131.  Emendation: Heilmann-Clausen, 1985, p.24-25, as Phthanoperidinium crenulatum.  Holotype: de Coninck, 1975, pl.17, figs.12-13.  Originally Peridinium, subsequently (and now) Phthanoperidinium.  Age: Early Eocene (Ypresian).

Parent: Phthanoperidinium