Phthanoperidinium comatum

comatum (Morgenroth, 1966b, p.1, pl.1, figs.1-2) Eisenack and Kjellström, 1972, p.907.  Holotype: Morgenroth, 1966b, pl.1, fig.1.  Originally Peridinium (Appendix B), subsequently (and now) Phthanoperidinium.  Taxonomic junior synonyms: Phthanoperidinium tritonium, according to Bujak in Bujak et al. (1980, p.72); Hystrichogonyaulax (now Phthanoperidinium) coreoides, according to Stover and Evitt (1978, p.118) - however, Benedek and Sarjeant (1981, p.328-330) retained Phthanoperidinium coreoides.  Eaton (1976, p.294) also proposed this combination.  Age: Early Oligocene.

Parent: Phthanoperidinium