Ovum hispidum subsp. trifurcatum Appendix A

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"subsp. trifurcatum" Eisenack, 1931, p.112, pl.4, figs.21-23.  Holotype: Eisenack, 1931, pl.4, fig.21.  Name not validly published: specific name not validly published.  NOW Peteinosphaeridium trifurcatum (Appendix A).  Originally Ovum hispidum subsp. trifurcatum (name not validly published), subsequently Hystrichosphaeridium trifurcatum, thirdly Baltisphaeridium trifurcatum (Appendix A), fourthly (and now) Peteinosphaeridium trifurcatum (Appendix A).  Taxonomic junior synonyms: Peteinosphaeridium bergstroemii Staplin et al., 1965, an acritarch species, according to Eisenack (1969a, p.254-255); Baltisphaeridium trifurcatum subsp. breviradiatum (subsequently Peteinosphaeridium breviradiatum), according to Eisenack (1969a, p.255), who considered Baltisphaeridium trifurcatum subsp. breviradiatum to be the senior name.  Age: Ordovician (erratic).

Parent: Ovum hispidum_Appendix A

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