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Appendix A

Baltisphaeridium divergens

"Baltisphaeridium divergens" (Eisenack, 1954b, p.67, pl.9, figs.13-16) Downie and Sarjeant, 1963, p.91.

TYPE: Holotype: Eisenack, 1954b, pl.9, fig.14.

STATUS: Combination not validly published: basionym not fully referenced.

HISTORY: NOW: Operculodinium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (combination not validly published), thirdly Cordosphaeridium, fourthly (and now) Operculodinium.

AGE: Early Oligocene.


Infraspecific taxa:


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