Tectatodinium minutum Matsuoka, 1983b, p.127, pl.5, fig.6; pl.6, figs.7a–b. Emendation: Matsuoka and Head, 1992, p.167, as Batiacasphaera minuta.

Now Batiacasphaera. Originally Tectatodinium, subsequently (and now) Batiacasphaera.

Holotype: Matsuoka, 1983, pl.6, figs.7a-b; Matsuoka and Head, 1992, pl.1, figs.1-11; text-figs.1A-C
Age: Age: late early–early middle Miocene.