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Cleistosphaeridium uncinispinosum

"Cleistosphaeridium uncinispinosum" (de Coninck, 1969, p.32-33, pl.9, figs.6-8) Sarjeant, 1981, p.123-124.

TYPE: Holotype: de Coninck, 1969, pl.9, figs.6-8.

HISTORY: NOW: Operculodinium. Originally Cordosphaeridium, subsequently Cordosphaeridium?, thirdly Cleistosphaeridium, fourthly (and now) Operculodinium.

AGE: Early Eocene.


Infraspecific taxa:


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