Cleistosphaeridium panniforme

"panniforme" (Gerlach, 1961, p.196–198, pl.28, fig.13) Stover and Evitt, 1978, p.31.  Holotype: Gerlach, 1961, pl.28, fig.13.  NOW Impletosphaeridium.  Originally Baltisphaeridium, subsequently (and now) Impletosphaeridium, thirdly Cleistosphaeridium.  Taxonomic senior synonym: Hystrichosphaeridium (now Cleistosphaeridium) placacanthum, according to Sarjeant (1984b, p.86–87) — however, Eaton et al. (2001, p.191) retained Baltisphaeridium (as and now Impletosphaeridium) panniforme.  Age: middle Oligocene.

Parent: Cleistosphaeridium