Hystrichosphaeridium borracherosum

"borracherosum" (Cramer, 1964, p.289, pl.1, fig.11; text-fig.16, no.6) Andreeva, 1973, p.192.  Holotype: Cramer, 1964, pl.1, fig.11.  Combination not validly published: basionym not fully referenced.  NOW Petaloferidium (Appendix A).  Originally Baltisphaeridium (Appendix A), subsequently Multiplicisphaeridium (Appendix A), thirdly Hystrichosphaeridium (combination not validly published), fourthly (and now) Petaloferidium (Appendix A).  Age: Silurian (Ludlow).

Parent: Hystrichosphaeridium