Cleistosphaeridium regulatum
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regulatum Zhou Heyi, 1985, p.7, pl.1, figs.16-17,19-21. Holotype: Zhou Heyi, 1985, pl.1, fig.16. Originally (and now) Cleistosphaeridium, subsequently Impletosphaeridium, thirdly Sepispinula?. He Chengquan et al. (2009, p.290) retained this species in Cleistosphaeridium. Age: mid Oligocene.
Parent: Cleistosphaeridium