Hystrichosphaeridium ramuliferum
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"ramuliferum" Deflandre, 1937b, p.74, pl.14 (al. pl.11), figs.5-6; pl.17 (al. pl.14), fig.10. Holotype: Deflandre, 1937b, pl.14 (al. pl.11), fig.5; Fensome et al., 1991, fig.1 - p.721; fig.1 - p.725. NOW Achomosphaera. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (combination not validly published; Appendix A), thirdly (and now) Achomosphaera, fourthly Spiniferites. Taxonomic junior synonym: Hystrichosphaeridium rehdense, according to Sarjeant (1983, p.97,99). Age: Late Cretaceous.
Parent: Hystrichosphaeridium
