From Fensome et al., 2019:
Horologinella disparilis He Chengquan, 1984b, p.162–163, pl.8, fig.22. Holotype: He Chengquan, 1984b, pl.8, fig.22; Pestchevitskaya, 2001, pl.2, fig.18; Pestchevitskaya, 2003, pl.2, fig.13. Age: Oligocene–Early Miocene (according to Pestchevitskaya, 2001, p.106).

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Original description: [He Chengquan, 1984b] (translated from Chinese with Google):

Horologinella disparilis (sp. nov.)
(Plate VIII, Figure 22)

The outline is described as dumbbell-shaped (possibly flattened laterally?), with the equatorial region contracted, dividing the shell into two parts of unequal size.

The shell wall is approximately 1.3 microns thick and consists of two layers, the inner layer slightly thicker than the outer layer. The surface is nearly smooth, with shell wall wrinkles. The ancient mouth is unknown.

The shell is 52.5 microns long, 32-38 microns wide, and 28 microns wide at the equatorial region.

This new species differs from other described species of the genus by its nearly dumbbell-shaped outline and its wrinkled walls.

Origin: Shangsi, Guangxi; the second section of the Yongning Group.