Tetrachacysta parvita
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parvita (Liu Zhili and Zheng Yuefang in Liu Zhili et al., 1992, p.67, pl.7, figs.26-28) He Chengquan et al., 2009, p.377. Holotype: Liu Zhili et al., 1992, pl.7, fig.26. Originally Dinogymnium, subsequently (and now) Tetrachacysta. Age: early Tertiary.
Parent: Tetrachacysta