Cleistosphaeridium erectum
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"?erectum" (Manum and Cookson, 1964, p.14, pl.3, figs.5–6) Stover and Evitt, 1978, p.31. Holotype: Manum and Cookson, 1964, pl.3, fig.5. NOW Kiokansium?. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cordosphaeridium?, fourthly Cleistosphaeridium?, fifthly (and now) Kiokansium?. Questionable assignment: Stover and Evitt (1978, p.31). Age: Albian–Turonian.
Parent: Cleistosphaeridium