From Fensome et al., 2019:
Cleistosphaeridium tiara subsp. centrocarpum (Deflandre and Cookson, 1955, p.272–273, pl.8, figs.3–4) Morgenroth, 1966a, p.26. Holotype: Deflandre and Cookson, 1955, pl.8, figs.3–4. NOW Operculodinium centrocarpum.
Originally Hystrichosphaeridium centrocarpum, subsequently Baltisphaeridium centrocarpum (Appendix
A), thirdly Cordosphaeridium tiara subsp. centrocarpum, fourthly (and now) Operculodinium
centrocarpum, fifthly Cordosphaeridium microtriainum subsp. centrocarpum, sixthly Cleistosphaeridium
centrocarpum. Motile equivalent: Peridinium (now Protoceratium) reticulatum Claparède and Lachmann,
1859 (as Gonyaulax grindleyi Reinecke, 1967), according to Wall and Dale (1966, p.1025–1026) —
however, see Head (1996b, p.1211). Age: Miocene.

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