Bohaidina arenula, Williams et al., 2017; Substitute name for Bohaidina granulata (Jiabo, 1978, p.47–48, pl.19, figs.7–12; pl.46, figs.1a–b; text-fig.8) He Chengquan et al., 2009, p.454; Emendation: Xu Jinli and Mao Shaozhi, 1989, p.303, as Prominangularia granulata.

Originally Prominangularia granulata, subsequently Bohaidina granulata (Jiabo) He Chengquan et al. (combination illegitimate, non Bohaidina granulata Jiabo), thirdly (and now) Bohaidina arenula.
Taxonomic senior synonym: Bohaidina granulata Jiabo, according to Sun Xuekun (1994, p.71) — however, He Chengquan et al. (2009, p.454) retained this species separately. N.I.A.

Holotype: Jiabo, 1978, pl.19, fig.7.
Age: Early Tertiary.

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Supplemented and emended description:

Xu Jinli and Mao Shaozhi, 1989:

Description:
Cyst rhombic in outline with both apical and antapical projections, the base of which slightly shrink, then expand to form a small "shoulder". 2-3 girdle projections well developed, one probably in dorsal side. Girdle folds 1-2, usually short. Wall autophragm, ornamented with non-tabular granules, resulting in the contour uneven.
Archeopyle, when developed, combination of tAa+3Ia type, opercula compound.

Discussion:
A detailed observation on the holotype (Jiabo, 1978, pl. 12, fig. 8) showed that indication of tabular suture was not found except for the rupture beneath the apex. In some specimens recovered from the type locality, however, well developed archeopyle of tAa+3Ia type has been observed. The present species differs from B. alveolae and B. dorsiprominentis in having granular ornamentation in its surface.