Difference between revisions of "Multiplicisphaeridium robustum subsp. fissum Appendix A"

Revision as of 15:16, 2 December 2016

"subsp. fissum" (Sannemann, 1955, p.331, pl.6, fig.9; text-figs.14a-c) Fensome et al., 1990, p.355.  Holotype: Sannemann, 1955, pl.6, fig.9.  NOW Aldridgeisphaera? robusta subsp. fissa (Appendix A).  Originally Hystrichosphaeridium robustum subsp. fissum, subsequently Baltisphaeridium robustum subsp. fissum (combination illegitimate, Appendix A), thirdly Multiplicisphaeridium robustum subsp. fissum, fourthly (and now) Aldridgeisphaera? robusta subsp. fissa (Appendix A).  This combination was not validly published in Eisenack et al. (1973, p.781) since these authors did not clearly indicate the taxonomic rank.  Age: Devonian (Late Givetian).