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Hystrichosphaeridium williereae

"Hystrichosphaeridium williereae" Martin, 1966a, p.389-391, pl.1, fig.23; text-figs.33-34.

TYPE: Holotype: Martin, 1966a, pl.1, fig.23.

HISTORY: NOW: Dilatisphaera (Appendix A). Originally Hystrichosphaeridium, subsequently Dilatisphaera (combination not validly published; Appendix A), thirdly Palaeohystrichosphaeridium (Appendix A), fourthly (and now) Dilatisphaera.

SYNONYM(S): Taxonomic junior synonym: Ozotobrachion? podolicus Sheshegova, 1973, an acritarch species, according to Kiryanov (1978, p.90).

AGE: Silurian(Llandovery).


Infraspecific taxa:


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