From Fensome et al., 2019:
Achomosphaera valianta, Sah et al., 1970, p.145, pl.1, figs.8–9.
Holotype: Sah et al., 1970, pl.1, fig.8.
Originally Achomosphaera, subsequently Cordosphaeridium.
Taxonomic senior synonym: Cordosphaeridium fibrospinosum, according to Fensome et al. (2009, p.23).
Taxonomic senior synonym: Cordosphaeridium exilimurum, according to Jain (1982, p.52).
Age: Late Cretaceous.

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