Cleistosphaeridium lumectum
From dinoflaj2
"?lumectum" (Sarjeant, 1960a, p.139-140, pl.6, fig.1; text-fig.2) Davey et al., 1969, p.16. Holotype: Sarjeant, 1960a, pl.6, fig.1; text-fig.2. NOW Impletosphaeridium. Originally Baltisphaeridium (Appendix A), subsequently Cleistosphaeridium, thirdly Cleistosphaeridium?, fourthly (and now) Impletosphaeridium. Questionable assignment: Stover and Evitt (1978, p.32) as a problematic species. This combination was not validly published in Davey et al. (1966, p.170), since these authors did not fully reference the basionym. Age: Late Oxfordian.
Parent: Cleistosphaeridium
