Hystrichosphaeridium pseudhystrichodinium subsp. magnum
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"subsp. magnum" Wetzel, 1955, p.35,38, figs.9-10,14. Emendation: Sarjeant, 1984c, p.138-139, as Coronifera oceanica subsp. magna. Holotype: Wetzel, 1955, fig.9; Sarjeant, 1984c, pl.5, figs.4-5; text-fig.11 (two illustrations); Fensome et al., 1991, p.663, figs.1-3; p.697, fig.1. NOW Coronifera oceanica subsp. magna. Originally Hystrichosphaeridium pseudhystrichodinium subsp. magnum, subsequently Baltisphaeridium pseudhystrichodinium subsp. magnum (Appendix A), thirdly (and now) Coronifera oceanica subsp. magna, fourthly Coronifera pedata subsp. magna. Age: Paleocene. Parent: Hystrichosphaeridium pseudhystrichodinium
