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Appendix A

Bion fluctuans

"Bion fluctuans" Eisenack, 1938c, p.230-231, pl.16, figs.1-3.

TYPE: Holotype: Eisenack, 1938c, pl.16, fig.3.

HISTORY: NOW: Baltisphaeridium (Appendix A). Originally Bion, subsequently Hystrichosphaeridium, thirdly Polysphaeridium? (combination not validly published), fourthly (and now) Baltisphaeridium (Appendix A).

AGE: Silurian.


Infraspecific taxa:


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