Tetrachacysta magnusa
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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. Holotype: Liu Zhili et al., 1992, pl.10, fig.11; text-fig.4. Originally Horologinella, subsequently (and now) Tetrachacysta. Age: early Tertiary.
Parent: Tetrachacysta