Tetrachacysta minuta (Zheng Yuefang and Liu Xuexian in Liu Zhili et al., 1992, p.70, pl.10, figs.9–10,12 — not text-fig.4) He Chengquan et al., 2009, p.376.

Originally Horologinella, subsequently (and now) Tetrachacysta.

Holotype: Liu Zhili et al., 1992, pl.10, fig.9.
Age: Early Tertiary.