Achomosphaera malleofera
From dinoflaj2
?malleofera (White, 1842, p.37, pl.4, div.3, fig.7) Sarjeant, 1991, p.88. Holotype: White, 1842, pl.4, div.3, fig.7; Sarjeant, 1991, fig.4.6. Originally Xanthidium (Appendix A), subsequently Baltisphaeridium (Appendix A), thirdly (and now) Achomosphaera?, fourthly Hystrichosphaeridium (combination not validly published). Questionable assignment: Sarjeant (1991, p.88). Age: Late Cretaceous.
Parent: Achomosphaera