From Fensome et al., 2019:
Cleistosphaeridium? multifurcatum (Deflandre, 1937b, p.76, pl.16 [also labelled pl.13], figs.1–3) Davey et al., 1969, p.16.
Emendation: Masure in Fauconnier and Masure, 2004, p.270, as Exochosphaeridium multifurcatum. Holotype:
Deflandre, 1937b, pl.16 (also labelled pl.13), figs.1–2; Fensome et al., 1991, figs.1–2 — p.691; fig.1 — p.693;
Fensome et al., 1993a, fig.1 — p.1261; figs.1–2 — p.1265; Fauconnier and Masure, 2004, pl.37, figs.10–11. NOW
Exochosphaeridium. Originally Hystrichosphaeridium, subsequently Baltisphaeridium (Appendix A), thirdly
Cleistosphaeridium, fourthly Cleistosphaeridium?, fifthly Heterosphaeridium, sixthly (and now)
Exochosphaeridium. Questionable assignment: Stover and Evitt (1978, p.31). This combination was not validly
published in Davey et al. (1966, p.170), since these authors did not fully reference the basionym. Age: Late
Cretaceous.
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Original description: [Deflandre, 1937, p. 76]: (Translation: Fensome, 1991, p. 692):

Description:
This is a collective species, susceptible to being later dismembered. Thus, under this name, I include all globular Hystrichosphaeridium covered with numerous branched processes, whose height does not exceed one quarter of the diameter of the shell and is very often less. Generally all the processes are branched, but the type, illustrated here, shows some with simple pointed extremities.
The surface is entirely reticulate, or covered with a sort of vermiculate ornamentation which cannot be analysed except at very high magnification.