From Williams et al., 2017:

[Nannoceratopsiella, Tasch, 1963, p.333

The nomenclatural type, N. permiana Tasch, 1963, is based on a mineral grain, according to Stover and Evitt, 1978

Type species: as Nannoceratopsiella permiana, Tasch, 1963 (pl.1, figs.4–6)]

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Original description: [Tasch, 1963]:

Diagnosis:
Subtriangular flask-shaped hypotheca bearing stubby antapical horns and separated from offset epithecal flap by a necklike subapical girdle.