Polysphaeridium pachydermum
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"pachydermum" (Cookson and Eisenack, 1960b, p.251-252, pl.38, fig.5; text-fig.5) Eisenack and Kjellström, 1975b, p.397 [al. p.922A]. Holotype: Cookson and Eisenack, 1960b, pl.38, fig.5; Fauconnier and Masure, 2004, pl.48, fig.10. NOW Impletosphaeridium. Originally Hystrichosphaeridium, subsequently Polysphaeridium, thirdly Hystrichosphaeridium?, fourthly Dapsilidinium, fifthly (and now) Impletosphaeridium. Age: Oxfordian-Tithonian.
Parent: Polysphaeridium
