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Cleistosphaeridium oligacanthum ssp. complanatum
From Fensome et al., 2019:
Cleistosphaeridium oligacanthum ssp. complanatum (Wetzel, 1952, p.404–405, pl.A, figs.11a–b) Lentin and Williams, 1973, p.29. Emendation: Sarjeant, 1984c, p.142, as Solisphaeridium stimuliferum subsp. complanatum. Holotype:
Wetzel, 1952, pl.A, figs.11a–b; Sarjeant, 1984c, pl.4, fig.6; text-fig.13. NOW Micrhystridium
stimuliferum? subsp. complanatum (Appendix A). Originally Hystrichosphaeridium oligacanthum subsp.
complanatum, subsequently Baltisphaeridium oligacanthum subsp. complanatum (Appendix A), thirdly
Cleistosphaeridium? oligacanthum subsp. complanatum, fourthly Solisphaeridium stimuliferum subsp.
complanatum (Appendix A), fifthly (and now) Micrhystridium stimuliferum? subsp. complanatum
(Appendix A). Age: Paleocene.
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Cleistosphaeridium oligacanthum ssp. complanatum (Wetzel, 1952, p.404–405, pl.A, figs.11a–b) Lentin and Williams, 1973, p.29. Emendation: Sarjeant, 1984c, p.142, as Solisphaeridium stimuliferum subsp. complanatum. Holotype:
Wetzel, 1952, pl.A, figs.11a–b; Sarjeant, 1984c, pl.4, fig.6; text-fig.13. NOW Micrhystridium
stimuliferum? subsp. complanatum (Appendix A). Originally Hystrichosphaeridium oligacanthum subsp.
complanatum, subsequently Baltisphaeridium oligacanthum subsp. complanatum (Appendix A), thirdly
Cleistosphaeridium? oligacanthum subsp. complanatum, fourthly Solisphaeridium stimuliferum subsp.
complanatum (Appendix A), fifthly (and now) Micrhystridium stimuliferum? subsp. complanatum
(Appendix A). Age: Paleocene.
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