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Polysphaeridium fluctuans

"Polysphaeridium? fluctuans" (Eisenack, 1938c, p.230-231, pl.16, figs.1-3) Davey and Williams, 1966b, p.95.

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

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

HISTORY: NOW: Baltisphaeridium (Appendix A). Originally Bion (Appendix A), subsequently Hystrichosphaeridium, thirdly Polysphaeridium? (combination not validly published), fourthly (and now) Baltisphaeridium (Appendix A). Questionable assignment: Davey and Williams (1966b, p.95).

AGE: Silurian.


Infraspecific taxa:


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