Hystrichosphaeridium robustum subsp. robustum
From dinoflaj2
"subsp. robustum". Autonym. Holotype: Sannemann, 1955, pl.6, fig.7. NOW Aldridgeisphaera? robusta subsp. robusta (Appendix A). Originally Hystrichosphaeridium robustum subsp. robustum, subsequently Multiplicisphaeridium robustum subsp. robustum (Appendix A). thirdly (and now) Aldridgeisphaera? robusta subsp. robusta (Appendix A). Parent: Hystrichosphaeridium robustum