Cleistosphaeridium polyozum
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"?polyozum" (Brosius, 1963, p.45, pl.1, fig.6; pl.6, fig.5; text-figs.2a–d) Stover and Evitt, 1978, p.31–32. Holotype: Brosius, 1963, pl.1, fig.6. NOW Impletosphaeridium?. Originally Baltisphaeridium (Appendix A), subsequently Cleistosphaeridium?, thirdly Surculosphaeridium, fourthly (and now) Impletosphaeridium. Questionable assignment: Stover and Evitt (1978, p.31). For etymology, see under Impletosphaeridium? polyozum. Age: late Oligocene.
Parent: Cleistosphaeridium