Hystrichosphaeridium longispinosoides
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"longispinosoides" Sannemann, 1955, p.329-330; pl.1, fig.10; pl.2, figs.1-4; pl.3, figs.6,8; pl.6, figs.1-6; text-figs.9a-b. Holotype: Sannemann, 1955, pl.6, fig.1. NOW Baltisphaeridium (Appendix A). Originally Hystrichosphaeridium, subsequently (and now) Baltisphaeridium (Appendix A). Age: Devonian (Late Givetian).
Parent: Hystrichosphaeridium