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Appendix A

Dilatisphaera williereae

Dilatisphaera williereae (Martin, 1966a, p.389-391, pl.1, fig.23; text-figs.33-34) Le Hérissé, 1989, p.115.

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

HISTORY: Originally Hystrichosphaeridium, subsequently Dilatisphaera (combination not validly published), 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).

COMMENTS: This combination was not validly published in T.R. Lister (1970, p.65) since that author did not clearly use the name Dilatisphaera williereae.

AGE: Silurian.


Infraspecific taxa:


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