Hystrichosphaera cristata
From dinoflaj3
"cristata" Conrad, 1941, p.4–5, pl.1, fig.D; text-fig.2D. Holotype: Conrad, 1941, pl.1, fig.D; text-fig.2D. NOW Spiniferites?. Originally Hystrichosphaera, subsequently Spiniferites, thirdly (and now) Spiniferites?. Age: Maastrichtian.
Parent: Hystrichosphaera