Hystrichosphaeridium armatum
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"armatum" Deflandre, 1937b, p.76–77, pl.16 (al. pl.13), figs.6–7. Emendation: Davey, 1969a, p.153, as Cleistosphaeridium armatum. Holotype: Deflandre, 1937b, pl.16 (al. pl.13), fig.6; Fauconnier and Masure, 2004, pl.23, figs.1–3. NOW Downiesphaeridium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium, fourthly (and now) Downiesphaeridium. Age: late Senonian.
Parent: Hystrichosphaeridium