From Fensome et al., 2019:
Hystrichosphaeridium ?paucifurcatum Cookson and Eisenack, 1961b, p.44, pl.2, fig.15. Holotype: Cookson and Eisenack, 1961b, pl.2, fig.15. Originally Hystrichosphaeridium, subsequently (and now) Hystrichosphaeridium?. Questionable assignment: Stover and Evitt (1978, p.56) as a problematic species. Age: Eocene.

---------------------------------------------------------------------------------------------------
Original description: [Cookson and Eisenack, 1961b]:

Hystrichosphaeridium paucifurcatum sp. nov.
(Plate II, Fig. 15: holotype Nat. Mus. Vict. P20543)

Occurrence. - In the Rottnest Bore between 1,480 and 1,595 feet.
Description. - Shell spherical to slightly oval, thin-walled, faintly granular, closely covered with long, slender, solid appendages which taper gradually towards their slightly bifurcate apices. The fine fibrils of which the appendages are composed splay out slightly on the surface of the shell.
Dimensions. - Holotype - Diameter of shell ca. 112 μ, length of appendages ca. 42 μ long.