Hystrichosphaeridium franconium
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"franconium" Sannemann, 1955, p.328, pl.3, fig.1; pl.5, figs.1-2. Holotype: Sannemann, 1955, pl.5, fig.1. NOW Baltisphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium (Appendix A). Age: Devonian (Late Givetian).
Parent: Hystrichosphaeridium