From Williams et al., 2017:

[Lingulasphaera, Drugg, 1970b, p. 817

Type species: Lingulasphaera spinula, Drugg, 1970b (fig.11D)]

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Original description: [Drugg, 1970]:

Description:
Tract more or less spherical, bearing numerous processes which are closed proximally and are usually closed distally.
The archaeopyle is apical with a simple attached operculum corresponding to a type Aa archaeopyle.