Spiniferites crassipellis
From dinoflaj3
"crassipellis" (Deflandre and Cookson, 1955, p.265, pl.6, figs.2–3; text-fig.20) Sarjeant, 1970, p.76. Holotype: Deflandre and Cookson, 1955, pl.6, figs.2–3. NOW Achomosphaera. Originally Hystrichosphaera, subsequently Spiniferites, thirdly (and now) Achomosphaera. Taxonomic junior synonyms: Achomosphaera recurvata and Hystrichosphaera (subsequently Spiniferites) membranosa, according to Quattrocchio and Sarjeant (1996, p.116). Age: early Eocene.
Parent: Spiniferites