From Fensome et al., 2019:
Adnatosphaeridium paucispinum (Klement, 1960, p.72, pl.10, figs.9–10) Gitmez and Sarjeant, 1972, p.234. Holotype: Klement, 1960, pl.10, fig.9; Sarjeant, 1984a, pl.3, figs.5–6. Originally Cannosphaeropsis, subsequently Adnatosphaeridium. Taxonomic senior synonym: Hystrichosphaeridium (as and now Rigaudella) aemulum, according to Below (1982b, p.139). Age: late Oxfordian.

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