From Williams et al., 2017:

[Chonesphaera, Klumpp, 1953, p. 395.

Problematic genus: see discussion under Chonesphaera incerta.
A calcisphere genus according to Elbrächter et al. (2008, p.1303).

Type species: Chonesphaera incerta, Klumpp, 1953 (pl.19, fig.9)]