From Fensome et al., 2019:
Diconodinium longicorne Olaru, 1978a, p.89, pl.12, fig.6. Holotype: Olaru, 1978a, pl.12, fig.6; Olaru, 1978b, pl.1, fig.2 (not 3).
Olaru (1978b, p.38) also cited this species as new. Age: Campanian.

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