Impletosphaeridium lumectum
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lumectum (Sarjeant, 1960a, p.139–140, pl.6, fig.1; text-fig.2) Islam, 1993, p.86. Originally Baltisphaeridium (Appendix A), subsequently Cleistosphaeridium, thirdly Cleistosphaeridium?, fourthly (and now) Impletosphaeridium. Age: late Oxfordian.
Parent: Impletosphaeridium