Hystrichosphaeridium ramuliferum
From dinoflaj3
"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