Aldridgeisphaera mutabilis Appendix A

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