From Fensome et al., 2019:

Evittodinium, Deflandre, 1964, p.5030. Lentin and Williams (1976, p.159) considered this to be a "nomen dubium".
Type: Deflandre, 1964, figs.1–5, as Evittodinium giselae.

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Original description: [Deflandre, 1964]: (Translation: Stover and Evitt, 1978, p. 105):

Description:
Shell with an internal body. Epitheca has one horn, hypotheca has two horns; cingulum (equatorial) ornamented with slightly elevated apophyses.