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