From Fensome et al., 2019:
Hystrichosphaeridium grande Salujha et al., 1969, p.37, pl.4, figs.59–60. Holotype: Salujha et al., 1969, pl.4, fig.59. Questionable
assignment: Masure and Foucher in Fauconnier and Masure (2004, p.311). Age: Early Eocene.

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