Hystrichosphaeridium malum

"malum" (Cramer, 1964, p.297, pl.1, figs.6,8,10; text-fig.19, nos.10-12) Andreeva, 1973, p.192.  Holotype: Cramer, 1964, pl.1, fig.8.  Combination not validly published: basionym not fully referenced.  NOW Rhacobrachion (Appendix A).  Originally Baltisphaeridium (Appendix A), subsequently Evittia Brito (Appendix A), thirdly Hystrichosphaeridium (combination not validly published), fourthly Multiplicisphaeridium (Appendix A), fifthly (and now) Rhacobrachion (Appendix A).  Age: Silurian (Ludlow).

Parent: Hystrichosphaeridium