From Williams et al., 2017:

[Imperfectodinium, Zevenboom and Santarelli in Zevenboom, 1995, p. 146.

Name not validly published: considered a manuscript name. This name was also not validly published in Gedl (1996, p.198), since no description was provided.

Type species: as Imperfectodinium bulbosum, Zevenboom, 1995 (pl.6, figs.1-4)]