Impletosphaeridium regulatum

"regulatum" (Zhou Heyi, 1985, p.7, pl.1, figs.16–17,19–21) Williams et al., 1998, p.335.  Holotype: Zhou Heyi, 1985, pl.1, fig.16.  NOW Cleistosphaeridium.  Originally (and now) Cleistosphaeridium, subsequently Impletosphaeridium, thirdly Sepispinula?.  Age: middle Oligocene.

Parent: Impletosphaeridium