sagena Davey and Williams, 1966a, p.51, pl.2, figs.1-2. Holotype: Davey and Williams, 1966a, pl.2, figs.1-2. Taxonomic junior synonym: Achomosphaera reticulata, according to Fechner (1985, p.115). May (1980, p.64) considered Hystrichosphaera (now Spiniferites) crassipellis to be the possible taxonomic senior synonym of this species. N.I.A. Age: Cenomanian.