Operculodinium tiara
From dinoflaj3
tiara (Klumpp, 1953, p.390–391, pl.17, figs.8–10) Stover and Evitt, 1978, p.179. Holotype: Klumpp, 1953, pl.17, figs.8–9. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cordosphaeridium, fourthly Cleistosphaeridium, fifthly (and now) Operculodinium. N.I.A. Age: Eocene.
Parent: Operculodinium