Phthanoperidinium eocenicum

?eocenicum (Cookson and Eisenack, 1965a, p.119–120, pl.11, figs.1–5) Lentin and Williams, 1973, p.113.  Holotype: Cookson and Eisenack, 1965a, pl.11, figs.1–2.  Originally Peridinium (Appendix B), subsequently (and now) Phthanoperidinium?.  Questionable assignment: Lentin and Williams (1973, p.113).  Stover and Evitt (1978, p.119) considered Phthanoperidinium stockmansii and Phthanoperidinium resistente to be possible taxonomic junior synonyms of Phthanoperidinium? eocenicum.  Eaton (1976, p.294) also proposed this combination.  Age: late Eocene.

Parent: Phthanoperidinium