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Hystrichosphaeridium oligospinosum

"Hystrichosphaeridium oligospinosum" Eisenack, 1934, p.64-65, pl.4, figs.15-18 ex Eisenack, 1938a, p.12.

TYPE: Holotype: Eisenack, 1934, pl.4, fig.18, lost according to Eisenack et al. (1973, p.494).

HISTORY: NOW: Estiastra? oligospinosa (Appendix A). Originally Ovum hispidum subsp. oligospinosum (combination not validly published; Appendix A), subsequently Hystrichosphaeridium oligospinosum, thirdly Pulvinosphaeridium oligospinosum (Appendix A), fourthly Veryhachium oligospinosum (Appendix A), fifthly Goniosphaeridium oligospinosum (Appendix A), sixthly (and now) Estiastra? oligospinosa (Appendix A).

COMMENTS: The name Ovum hispidum subsp. oligospinosum was not validly published in Eisenack (1934) since the specific name Ovum hispidum was not validly published.

AGE: Silurian (erratic).


Infraspecific taxa:


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