Downiesphaeridium tribuliferum
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tribuliferum (Sarjeant, 1962a, p.487, pl.70, fig.4; text-figs.6c,7) Masure in Fauconnier and Masure, 2004, p.196). Holotype: Sarjeant, 1962a, pl.70, fig.4; Fauconnier and Masure, 2004, pl.23, fig.11. Originally Baltisphaeridium (Appendix A), subsequently Cleistosphaeridium, thirdly Cleistosphaeridium?, fourthly Impletosphaeridium, fifthly (and now) Downiesphaeridium. Age: Oxfordian.
Parent: Downiesphaeridium