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Impletosphaeridium clavulum

Impletosphaeridium clavulum (Davey, 1969a, p.154-155, pl.6, figs.9-10) Islam, 1993, p.85.

TYPE: Holotype: Davey, 1969a, pl.6, fig.9.

HISTORY: Originally Cleistosphaeridium polypes var. clavulum, subsequently Cleistosphaeridium polypes subsp. clavulum, thirdly Impletosphaeridium polypes subsp. clavulum, fourthly Bacchidinium polypes subsp. clavulum, fifthly Cleistosphaeridium clavulum, sixthly (and now) Impletosphaeridium clavulum.

AGE: Cenomanian.


Infraspecific taxa:


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