Baltisphaeridium fluctuans Appendix A
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fluctuans (Eisenack, 1938c, p.230–231, pl.16, figs.1–3) Lentin and Williams, 1993, p.699. Holotype: Eisenack, 1938c, pl.16, fig.3. Originally Bion (Appendix A), subsequently Hystrichosphaeridium, thirdly Polysphaeridium? (combination not validly published), fourthly (and now) Baltisphaeridium. Age: Silurian.
Parent: Baltisphaeridium_Appendix A