Sentusidinium varispinosum

"?varispinosum" (Sarjeant, 1959, p.338–340, pl.13, fig.7; text-fig.6) Sarjeant and Stover, 1978, p.50.  Holotype: Sarjeant, 1959, pl.13, fig.7; text-fig.6; Fauconnier and Masure, 2004, pl.49, fig.8.  NOW Impletosphaeridium.  Originally Baltisphaeridium (Appendix A), subsequently Tenua Eisenack, thirdly Sentusidinium, fourthly Sentusidinium?, fifthly Cleistosphaeridium, sixthly (and now) Impletosphaeridium.  Questionable assignment: Stover and Evitt (1978, p.81).  Age: early Callovian.

Parent: Sentusidinium