Baltisphaeridium trifurcatum subsp. trifurcatum Appendix A

"subsp. trifurcatum".  Autonym.  Holotype: Eisenack, 1931, pl.4, fig.21, as Ovum hispidum subsp. trifurcatum; 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).  NOW Peteinosphaeridium trifurcatum subsp. trifurcatum (Appendix A).  Originally Hystrichosphaeridium trifurcatum subsp. trifurcatum, subsequently Baltisphaeridium trifurcatum subsp. trifurcatum, thirdly (and now) Peteinosphaeridium trifurcatum subsp. trifurcatum (Appendix A).  Taxonomic junior synonym: Baltisphaeridium trifurcatum subsp. breviradiatum (subsequently Peteinosphaeridium breviradiatum) Eisenack, 1959 ex Eisenack, 1965a, an acritarch taxon, according to Eisenack (1969b, p.255), who believed Baltisphaeridium trifurcatum subsp. breviradiatum (al. Peteinosphaeridium breviradiatum) to be the senior name. Parent: Baltisphaeridium trifurcatum