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Hystrichosphaeridium trifurcatum

"Hystrichosphaeridium trifurcatum" Eisenack, 1931, p.112, pl.4, figs.21-23 ex Eisenack, 1938a, p.12,16-19.

TYPE: Holotype: Eisenack, 1931, pl.4, fig.21, as Ovum hispidum subsp. trifurcatum (Appendix A); Eisenack, 1938a, pl.2, fig.2, lost according to Eisenack (1959, p.202). Neotype: Eisenack, 1959, pl.17, fig.3, designated by Eisenack (1959, p.202).

HISTORY: NOW: Peteinosphaeridium trifurcatum (Appendix A). Originally Ovum hispidum subsp. trifurcatum (combination not validly published; Appendix A), subsequently Hystrichosphaeridium trifurcatum, thirdly Baltisphaeridium trifurcatum (Appendix A), fourthly (and now) Peteinosphaeridium trifurcatum (Appendix A).

SYNONYM(S): Taxonomic junior synonyms: Peteinosphaeridium bergstroemii Staplin et al., 1965, an acritarch species, according to Eisenack (1969b, p.254-255); Baltisphaeridium trifurcatum subsp. breviradiatum (subsequently Peteinosphaeridium breviradiatum), by implication in Eisenack (1969a, p.255), who considered Baltisphaeridium trifurcatum subsp. breviradiatum to have priority over Baltisphaeridium trifurcatum subsp. trifurcatum.

COMMENTS: The name Ovum hispidum subsp. trifurcatum was not validly published in Eisenack (1931) since the specific name Ovum hispidum was not validly published.

AGE: Ordovician (erratic).


Infraspecific taxa:


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