Parabohaidina arenata Williams et al., 2017. Substitute name for Parabohaidina granulata (He Chengquan, 1984b, p.156–157, pl.2, figs.22–27; text-fig.1) He Chengquan et al., 2009, p.465. Emendation: Xu Jinli and Mao Shaozhi, 1989, p.302.

Holotype: He Chengquan, 1984b, pl.2, fig.26.

Originally Conicoidium granulatum, subsequently Parabohaidina granulata (Jiabo) He Chengquan et al. (illegitimate combination, non Parabohaidina granulata Jiabo), thirdly (and now) Parabohaidina arenata.
Taxonomic senior synonym: Parabohaidina granulata, according to Sun Xuekun (1994, p.82) ) — however, He Chengquan et al. (2009, p.454) retained this species separately.

Age: Tertiary.

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From He Chengquan, 1984b (translated from Chinese with Google):

Parabohaidina granulata Jiabo 1978
(Plate I, Figures 10-18)

1978 Paraboahidina granulata Jiabo, Early Tertiary Dinophytes and Amblystachians of the Bohai Sea Coast, p. 44, plate 17, figure 5.

The shell is 45-60 microns long and 53-60 microns wide.

Note: The current specimens generally show a palaeoostium; when the grains are well developed, they are partially connected and wrinkled; the outer wall of the top of some specimens is thickened and the color becomes darker; in some specimens, the shell is wider than it is long, and the poles are underdeveloped, showing narrow edges.

Origin: Shangsi, Guangxi, the second section of the Yongning Group; the northern suburbs of Nanning, the lower coal-bearing section of the Yongning Group.