Spiniferites crassipellis

"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