Operculodinium uncinispinosum
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uncinispinosum (de Coninck, 1969, p.32–33, pl.9, figs.6–8) Islam, 1983b, p.342. Holotype: de Coninck, 1969, pl.9, figs.6–8. Originally Cordosphaeridium, subsequently Cordosphaeridium?, thirdly Cleistosphaeridium, fourthly (and now) Operculodinium. Age: early Eocene.
Parent: Operculodinium