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Hystrichosphaeridium intermedium

"Hystrichosphaeridium intermedium" Eisenack, 1954a, p.208, pl.1, figs.3,9; text-figs.3-4.

TYPE: Holotype: Eisenack, 1954a, pl.1, fig.3.

STATUS: Name illegitimate - senior homonym: Hystrichosphaeridium intermedium (O. Wetzel, 1933b) Deflandre, 1937a. Substitute name: Hystrichosphaeridium meson.

HISTORY: NOW: Visbysphaera mesa (Appendix A). Originally Hystrichosphaeridium intermedium (name illegitimate), subsequently Hystrichosphaeridium meson, thirdly Baltisphaeridium meson (Appendix A), fourthly (and now) Visbysphaera mesa (Appendix A), fifthly Multiplicisphaeridium meson (Appendix A).

SYNONYM(S): Taxonomic junior synonym: Baltisphaeridium (subsequently Multiplicisphaeridium) micropilare Cramer, 1970, an acritarch species, according to Ye Xiaorong (1984, p.42).

AGE: Silurian (Late Llandovery-Late Ludlow).


Infraspecific taxa:


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