Impletosphaeridium panniforme

panniforme (Gerlach, 1961, p.196–198, pl.28, fig.13) Morgenroth, 1966a, p.35.  Holotype: Gerlach, 1961, pl.28, fig.13.  Originally Baltisphaeridium, subsequently (and now) Impletosphaeridium, thirdly Cleistosphaeridium.  Eaton et al. (2001, p.191) implied that this species be retained in Impletosphaeridium.  Taxonomic senior synonym: Hystrichosphaeridium (now Cleistosphaeridium) placacanthum, according to Sarjeant (1984b, p.86–87) — however, Eaton et al. (2001, p.191) retained Baltisphaeridium (as Impletosphaeridium) panniforme.  Age: middle Oligocene.

Parent: Impletosphaeridium