From Fensome et al., 2019:
Brigantedinium pynei Hannah et al., 1998, p.535, figs.5a–b. Holotype: Hannah et al., 1998, figs.5a–b (not figs.5c–d, as indicated in
Hannah et al., 1998, p.535) (lost according to Clowes et al. (2016, p.80). Clowes et al. (2016, p.80) implied that this
species might be a taxonomic synonym of Batiacasphaera cooperi. Age: Miocene.

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

Description:
Shape: large, spherical.
Phragma: autophragm, orange brown in color. Surface rugulose with no visible paratabulation.
Archaeopyle: intercalary. Although the archaeopyle is clearly visible on the holotype, it is often difficult to see. However, the operculum, consisting of a single intercalary paraplate is commonly preserved within the cyst.

Dimensions:
width = 63(73)83 μm based on 10 specimens.