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Hystrichosphaeridium pseudohystrichodinium
Hystrichosphaeridium "pseudhystrichodinium" Deflandre, 1937b, p.73, pl.15 (al. pl.12), figs.3-4. Emendation: Davey, 1969a, p.163, as Exochosphaeridium pseudhystrichodinium.
Holotype: Deflandre, 1937b, pl.15 (al. pl.12), fig.3; Eisenack and Kjellström, 1972, p.415; Fensome et al., 1995, fig.1 - p.1705.
NOW Pervosphaeridium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Exochosphaeridium?, fourthly (and now) Pervosphaeridium. Taxonomic junior synonym: Hystrichosphaeridium (as Exochosphaeridium?) palmatum Deflandre and Courteville, according to Yun Hyesu (1981, p.29).
Age: Late Cretaceous.
Holotype: Deflandre, 1937b, pl.15 (al. pl.12), fig.3; Eisenack and Kjellström, 1972, p.415; Fensome et al., 1995, fig.1 - p.1705.
NOW Pervosphaeridium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Exochosphaeridium?, fourthly (and now) Pervosphaeridium. Taxonomic junior synonym: Hystrichosphaeridium (as Exochosphaeridium?) palmatum Deflandre and Courteville, according to Yun Hyesu (1981, p.29).
Age: Late Cretaceous.