Ovum hispidum subsp. longispinosum Appendix A
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"subsp. longispinosum" Eisenack, 1931, p.110–111, pl.5, figs.6–17. Holotype: Eisenack, 1931, pl.5, fig.10, lost according to Eisenack (1959, p.194). Neotype: Eisenack, 1959, pl.15, fig.1, designated by Eisenack (1959, p.194). Name not validly published: specific name not validly published. NOW Baltisphaeridium longispinosum (Appendix A). Originally Ovum hispidum subsp. longispinosum (name not validly published), subsequently Hystrichosphaera longispinosa (name not validly published), thirdly Hystrichosphaeridium longispinosum, fourthly (and now) Baltisphaeridium longispinosum (Appendix A), fifthly Micrhystridium longispinosum (combination not validly published, Appendix A). Age: Ordovician (erratic).
Parent: Ovum hispidum_Appendix A