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Polysphaeridium fluctuans

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

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

Holotype: Eisenack, 1938c, pl.16, fig.3.
Age: Silurian.

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