Hystrichosphaeridium pulcherrimum

"pulcherrimum" Deflandre and Cookson, 1955, p.270–271, pl.1, fig.8; text-figs.21–22.  Holotype: Deflandre and Cookson, 1955, pl.1, fig.8; text-figs.21–22; Fauconnier and Masure, 2004, pl.60, figs.8–11.  NOW Oligosphaeridium.  Originally Hystrichosphaeridium, subsequently (and now) Oligosphaeridium.  This name was not validly published in Deflandre and Cookson (1954, p.1236), who did not provide a description.  Age: Albian.

Parent: Hystrichosphaeridium