Hystrichosphaera ramosa var. gracilis

"var. gracilis" Davey and Williams, 1966a, p.34–35, pl.1, fig.5; pl.5, fig.6.  Holotype: Davey and Williams, 1966a, pl.5, fig.6; Bujak et al., 1980, pl.4, figs.1–2.  NOW Spiniferites ramosus subsp. gracilis.  Originally Hystrichosphaera ramosa var. gracilis, subsequently Spiniferites ramosus var. gracilis, thirdly (and now) Spiniferites ramosus subsp. gracilis.  Taxonomic junior synonym (at subspecific rank): Hystrichosphaeridium plicatum, according to Sarjeant (1983, p.93).  Age: Cenomanian–Eocene.

Parent: Hystrichosphaera ramosa