Cleistosphaeridium varispinosum
From dinoflaj2
"varispinosum" (Sarjeant, 1959, p.338-340, pl.13, fig.7; text-fig.6) Woollam and Riding, 1983, p.3. 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: Cleistosphaeridium
