Phthanoperidinium schizokeras

?schizokeras (de Coninck, 1975, p.97, pl.17, figs.16-17) Lentin and Williams, 1977b, p.131.  Holotype: de Coninck, 1975, pl.17, figs.16-17.  Originally Peridinium (Appendix B), subsequently Phthanoperidinium, thirdly (and now) Phthanoperidinium?.  Questionable assignment: Stover and Evitt (1978, p.119).  Age: Ypresian.

Parent: Phthanoperidinium