Tetrachacysta minuta
From dinoflaj3
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.
Parent: Tetrachacysta