Impletosphaeridium panniforme
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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