From Fensome et al., 2019:
Chytroeisphaeridia elongata He Chengquan, 1991, p.115, pl.6, fig.6. Holotype: He Chengquan, 1991, pl.6, fig.6. Age: Paleocene.

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Original description: [He Chengquan, 1991]: (translated by Suning Hou, 07-01-2019):

Description:
Cyst oval or ellipse, length larger than width, no apical antapical horn.
Thin wall, the surface is smooth or slightly rough.
Paratabulation is only reflected by the archeopyle.
Archeopyle precingular, outline horseshoe-shaped. The operculum is completely separated and stored in-situ.

Dimensions:
Cyst length 70 μm, width 60 μm.

Affinities:
This species is distinguished from Chytroeisphaeridia chytroeides by the slightly ovoid cyst rather than round or broadly ovoid.