Phthanoperidinium tritonium

"tritonium" Eaton, 1976, p.299–300, pl.17, figs.2–3,6–7; text-figs.23C,24A–B.  Holotype: Eaton, 1976, pl.17, fig.3; text-figs.24A–B; Bujak et al., 1980, pl.5, figs.7–8.  Taxonomic senior synonym: Hystrichogonyaulax (now Phthanoperidinium) coroides, according to Fensome et al. (2009, p.54–55).  Bujak in Bujak et al. (1980, p.72) considered Phthanoperidnium tritonium to be a taxonomic junior synonym of Phthanoperidinim comatum.  Age: early-middle Eocene (see Aubry, 1986).

Parent: Phthanoperidinium