Hystrichosphaeridium castanea

"castanea" Eisenack, 1934, p.71, pl.5, fig.32 ex Eisenack, 1938a, p.12.  Holotype: Eisenack, 1934, pl.5, fig.32.  NOW Baltisphaeridium castanea (Appendix A).  Originally Ovum hispidum subsp. castanea (name not validly published; Appendix A), subsequently Hystrichosphaeridium castanea, thirdly (and now) Baltisphaeridium castanea (Appendix A).  The name Ovum hispidum subsp. castanea was not validly published in Eisenack (1934) since the specific name Ovum hispidum was not validly published.  N.I.A.  Age: Silurian.

Parent: Hystrichosphaeridium