Bohaidina spinosa, Xu Jingli and Mao Shaozhi, 1989

Holotype: Xu Jinli and Mao Shaozhi, 1989, pl.1, fig.12
Locus typicus: not mentioned in abstract
Location and horizon: Upper part of the Third Member of the Shahejie Formation, Zhanhua and Kenli counties, Shandong Province.
Stratum typicum: Early Tertiary

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Original description: [Xu Jinli and Mao Shaozhi, 1989, p.222]: (from english abstract):

Diagnosis:
Autocyst biconical to subquadrata in ambitus. Girdle projections 2-3. Autophragm 1 µm thick, covered with nontabular granulatebaculate ornamentation; baculae pointed or slightly expanded distally, less than 1 µm across and 1.5-2.5 µm long.
Archeopyle, when discernible, combination of [tAa]+3Ia type. Operculum compound.
According to the cyst morphology this species can be subdivided into three forms: fusiforma, quadrata and spinosa.

(Provisional translation GSC: courtesy R. Fensome):

Dimensions:
40 - 55.5 (holotype 40) µm in length, 31 - 44.5 (holotype 34.5) µm in width.