From Fensome et al., 2019:

Canningia crassicingulata Burger, 1980b, p.268, figs.4C,D1–2. Holotype: Burger, 1980b, fig.4D1–2. NOW Levisphaera. Originally Canningia, subsequently Batiacasphaera, thirdly (and now) Levisphaera. Age: Berriasian–Valanginian.

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Original description: [Burger, 1980, p. 268]:

Description:
Rounded egg-shaped, without horns. Autophragm rigid, psilate, 1.5-2 µm thick, slightly thicker (up to 4 µm) in a broad cingular belt.
Archaeopyle apical with a zigzag margin, outlining the presence of 6 precingular paraplates; parasulcal notch usually present. Operculum not observed.
No other traces of paratabulation visible.

Dimensions:
Apical diameter (5 dehisced specimens) 52-78 µm, width 50-69 µm.