Cleistosphaeridium spissum
From dinoflaj2
"spissum" McIntyre and Brideaux, 1980, p.20, pl.7, figs.1-9. Holotype: McIntyre and Brideaux, 1980, pl.7, figs.1-4. NOW Prolixosphaeridiopsis (Appendix A). Originally Cleistosphaeridium, subsequently Prolixosphaeridium?, thirdly (and now) Prolixosphaeridiopsis (Appendix A). Age: Valanginian.
Parent: Cleistosphaeridium