From Fensome et al., 2019:
Cannosphaeropsis hyperacantha Cookson and Eisenack, 1960a, p.9, pl.2, figs.14–15. Holotype: Cookson and Eisenack, 1960a, pl.2,
fig.14. Originally Cannosphaeropsis, subsequently (and now) Cannosphaeropsis?. Questionable assignment:
Stover and Evitt (1978, p.144) as a problematic species. Age: Campanian.

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Original description: [Cookson and Eisenack, 1960, p. 9]:

Description:
Shell sphaerical, thin-walled, with many processes of various width, which by their division form a dense enveloping network, the threads of which are well covered with straight or curved spines, sometimes with confluent bases. The shell as a whole has the appearance of a ball wrapped in a tangle of barbed wire.

Dimensions:
Holotype: diameter of shell about 46 µm, overall diameter about 90 µm.
Range: overall diameter about 62-100 µm.