Achomosphaera hyperacantha
From dinoflaj2
"hyperacantha" (Deflandre and Cookson, 1955, p.264-265, pl.6, fig.7) Davey and Williams, 1969, p.4. Holotype: Deflandre and Cookson, 1955, pl.6, fig.7. NOW Spiniferites. Originally Hystrichosphaera, subsequently Achomosphaera, thirdly (and now) Spiniferites. Taxonomic junior synonym (at specific rank): Hystrichosphaera furcata var. multiplicata, according to Matsuoka (1985a, p.35). Motile equivalent: Gonyaulax spinifera complex, according to Matsuoka et al. (1989, p.94). Age: Miocene.
Parent: Achomosphaera
