Hystrichosphaeridium mutabile

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"mutabile" Sannemann, 1955, p.331, pl.5, figs.5-6; text-figs.17a-d.  Holotype: Sannemann, 1955, pl.5, fig.5.  NOW Aldridgeisphaera (Appendix A).  Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Multiplicisphaeridium? (Appendix A), fourthly (and now) Aldridgeisphaera (Appendix A).  Age: Devonian (Late Givetian).

Parent: Hystrichosphaeridium