Micrhystridium longispinosum Appendix A

"longispinosum" (Eisenack, 1931, p.110–111, pl.5, figs.6–17 ex Wetzel, 1933b, p.44) Cramer et al., 1979, p.42.  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).  Combination not validly published: basionym not fully referenced.  NOW Baltisphaeridium longispinosum (Appendix A).  Originally Ovum hispidum subsp. longispinosum (name not validly published; Appendix A), subsequently Hystrichosphaera longispinosa (name not validly published), thirdly Hystrichosphaeridium longispinosum, fourthly (and now) Baltisphaeridium longispinosum (Appendix A), fifthly Micrhystridium longispinosum (name not validly published).  Age: Ordovician (early Caradoc).

Parent: Micrhystridium_Appendix A