Downiesphaeridium armatum
From dinoflaj2
armatum (Deflandre, 1937b, p.76-77, pl.16 [al. pl.13], figs.6-7) Islam, 1993, p.84. 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. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly Cleistosphaeridium, fourthly (and now) Downiesphaeridium. Age: late Senonian.
Parent: Downiesphaeridium
