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Tetrachacysta biconvexa ssp. granulata
From Fensome et al., 2019:
Tetrachacysta biconvexa subsp. granulata (Zheng Yuefang and Liu Xuexian in Liu Zhili et al., 1992, p.70, pl.10, figs.3–8) He Chengquan et al., 2009, p.374.
Holotype: Liu Zhili et al., 1992, pl.10, fig.7.
Originally Horologinella biconvexa subsp. granulata, subsequently (and now) Tetrachacysta biconvexa subsp. granulata.
Taxonomic senior synonym: Tetrachacysta allenii, according to Xu Jinli et al. (1997, p.42) — however, He Chengquan et al., 2009, p.374) retained this taxon.
Age: early Tertiary.
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Tetrachacysta biconvexa subsp. granulata (Zheng Yuefang and Liu Xuexian in Liu Zhili et al., 1992, p.70, pl.10, figs.3–8) He Chengquan et al., 2009, p.374.
Holotype: Liu Zhili et al., 1992, pl.10, fig.7.
Originally Horologinella biconvexa subsp. granulata, subsequently (and now) Tetrachacysta biconvexa subsp. granulata.
Taxonomic senior synonym: Tetrachacysta allenii, according to Xu Jinli et al. (1997, p.42) — however, He Chengquan et al., 2009, p.374) retained this taxon.
Age: early Tertiary.
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