Downiesphaeridium tribuliferum

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