From Williams et al., 2017:

[Hapsidopalla, Playford, 1977, p. 25. Emendation: Wicander and Wood, 1981, p.42–43.
Acritarch genus.

Type species: originally as Micrhystridium sannemannii, Deunff, 1957 (fig.1 - p.13)] ; Hapsidopalla sannemannii, emend. Playford, 1977