Batiacasphaera setulosa var. minima, Shaw Chenglong, 1999b, p.182, figs.84-86.

Holotype: Shaw Chenglong, 1999b, 84-86.
Age: Eocene.

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Original description: [Shaw Chenglong, 1999b]:

Description:
Cysts spherical, subspherical or lenticular with a characteristic setose surface, 2-3 μm long and thin autophragm (1-1.5 μm thick);
apical archeopyle, operculum generally free, occasionally remains in place.
No indications of paratabulation, paracingulum or parasulcus.

Dimensions:
Holotype – Overall 35 μm long, 42 μm wide, autophragm 1-1.5 μm thick, apical archeopyle 15 μm wide.

Affinities/Remarks:
The variety differs from Batiacasphaera setulosa Shaw in being substantially smaller and in having thin autophragm.