Surculosphaeridium granulatum
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?granulatum (Wetzel, 1952, p.404; text-fig.25) Sarjeant, 1984c, p.136. Emendation: Sarjeant, 1984c, p.136, as Surculosphaeridium? granulatum. Holotype: Wetzel, 1952, text-fig.25; Sarjeant, 1984c, pl.5, figs.1-3; text-fig.8. Originally Hystrichosphaeridium oligacanthum subsp. granulatum, subsequently Baltisphaeridium oligacanthum subsp. granulatum (Appendix A), thirdly Cleistosphaeridium? oligacanthum subsp. granulatum, fourthly (and now) Surculosphaeridium? granulatum. Questionable assignment: Sarjeant (1984c, p.136) and Fauconnier and Pourtoy in Fauconnier and Masure (2004, p.519) as a problematic species. Age: Paleocene.
Parent: Surculosphaeridium
