Cleistosphaeridium lumectum

"?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