Aldridgeisphaera mutabilis Appendix A
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mutabilis (Sannemann, 1955, p.331, pl.5, figs.5–6; text-figs.17a–d) Sarjeant and Vavrdova, 1997, p.6. Holotype: Sannemann, 1955, pl.5, fig.5. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Multiplicisphaeridium (Appendix A), fourthly (and now) Aldridgeisphaera. Age: Devonian (late Givetian).
Parent: Aldridgeisphaera_Appendix A