From Fensome et al., 2019:
Horologinella micirugis He Chengquan, 1984b, p.163, pl.10, figs.12–14; text-fig.2. Holotype: He Chengquan, 1984b, pl.10, fig.14; Pestchevitskaya, 2001, pl.2, fig.20; Pestchevitskaya, 2003, pl.2, fig.12. Age: Oligocene–Early Miocene (according to Pestchevitskaya, 2001, p.106).

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