Tetrachacysta magnusa (Liu Zhili and Zheng Yuefang in Liu Zhili et al., 1992, p.70–71, pl.10, fig.11; text-fig.4) He Chengquan et al., 2009, p.375.

Originally Horologinella, subsequently (and now) Tetrachacysta.

Holotype: Liu Zhili et al., 1992, pl.10, fig.11; text-fig.4.
Age: Early Tertiary.