Tenua varispinosa

"varispinosa" (Sarjeant, 1959, p.338–340, pl.13, fig.7; text-fig.6) Sarjeant, 1972, p.43.  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.  Age: early Callovian.

Parent: Tenua_Eisenack 1958a