From Fensome et al., 2019:
Batiacasphaera cooperi Hannah et al., 1998, p.534–535, figs.4j–k. Holotype: Hannah et al., 1998, figs.4j–k (not figs.5a–b, as indicated in Hannah et al., 1998, p.534). Originally Batiacasphaera? subsequently (and now) Batiacasphaera.
Questionable assignment: Clowes et al., 2016, p.80; however, Wood et al. (2016, p.63) did not question the
assignment. Clowes et al. (2016, p.80) implied that this species might be a taxonomic synonym of Brigantedinium
pynei. Age: Miocene.

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Original description: [Hannah et al., 1998]:

Description:
Shape: large, subspherical.
Phragma: autophragm covered with a dense reticulum. Muri thick but lumen variable in width. No paratabulation indicated by wall features.
Archaeopyle: large apical archaeopyle, operculum detached. Margins of the archaeopyle often indistinct due to cyst damage. No detached opercula found.

Dimensions/Size:
diameter =63(73)84 µm, based on six specimens.

Affinities:
species differs from Batiacasphaera cassiciila Wilson (1988) by having a coarser more variable reticulum