Impagidinium ?ovum (Sah et al., 1970, p.147-148, pl.2, fig.25) Stover and Evitt, 1978, p.166.
Holotype: Sah et al., 1970, pl.2, fig.25.
Originally Leptodinium, subsequently (and now) Impagidinium?. Questionable assignment: Stover and Evitt (1978, p.166). N.I.A.
Age: Late Cretaceous.