Impletosphaeridium "densicomatum" (Maier, 1959, p.307-308, pl.29, figs.7-8) Sarjeant, 1983, p.111. Emendation: Sarjeant, 1983, p.111-113, as Sentusidinium densicomatum.
Holotype: Maier, 1959, pl.29, fig.7.
NOW Pilosidinium. Originally Galea (generic name illegitimate), subsequently Baltisphaeridium (Appendix A), thirdly Impletosphaeridium, fourthly Impletosphaeridium?, fifthly Sentusidinium, sixthly (and now) Pilosidinium.
Age: mid Oligocene-Mid Miocene

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