From Fensome et al., 2019:
Hystrichosphaerina turonica Alberti, 1961, p.39, pl.10, figs.4a–b. Holotype: Alberti, 1961, pl.10, figs.4a–b. Originally (and now) Hystrichosphaerina, subsequently Systematophora, thirdly Polystephanephorus. Stancliffe and Sarjeant (1990,
p.204) retained this species in Hystrichosphaerina. Age: Turonian.

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