Difference between revisions of "Tetrachacysta biconvexa subsp. laevigata"
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Revision as of 15:09, 2 December 2016
subsp. laevigata (Zheng Yuefang and Liu Xuexian in Liu Zhili et al., 1992, p.69-70, pl.10, figs.1-2) He Chengquan et al., 2009, p.374. Holotype: Liu Zhili et al., 1992, pl.10, fig.2. Originally Horologinella biconvexa subsp. laevigata, subsequently (and now) Tetrachacysta biconvexa subsp. laevigata. Age: early Tertiary.
Parent: Tetrachacysta biconvexa