Impletosphaeridium tribuliferum

"tribuliferum" (Sarjeant, 1962a, p.487-488, pl.70, fig.4; text-figs.6c,7) Islam, 1993, p.87.  Holotype: Sarjeant, 1962a, pl.70, fig.4; Fauconnier and Masure, 2004, pl.23, fig.11.  NOW Downiesphaeridium.  Originally Baltisphaeridium (Appendix A), subsequently Cleistosphaeridium, thirdly Cleistosphaeridium?, fourthly Impletosphaeridium, fifthly (and now) Downiesphaeridium.  Age: Oxfordian.

Parent: Impletosphaeridium