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Appendix A

Baltisphaeridium lumectum

"Baltisphaeridium lumectum" Sarjeant, 1960a, p.139-140, pl.6, fig.1; text-fig.2.

TYPE: Holotype: Sarjeant, 1960a, pl.6, fig.1; text-fig.2.

HISTORY: NOW: Impletosphaeridium. Originally Baltisphaeridium, subsequently Cleistosphaeridium, thirdly Cleistosphaeridium?, fourthly (and now) Impletosphaeridium.

AGE: Late Oxfordian.


Infraspecific taxa:


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