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Operculodinium xanthium
Operculodinium xanthium (Benedek, 1972) Stover and Evitt, 1978; Emendation: Benedek and Sarjeant, 1981, p.342–343, as Lingulodinium xanthium.
Originally Cordosphaeridium, subsequently (and now) Operculudinium, thirdly Lingulodinium. Stover and Hardenbol (1994, p.33) retained this species in Operculodinium.
Holotype: Benedek, 1972, pl.9, fig.8; Benedek and Sarjeant, 1981, fig.9, no.5
Age: Middle-Late Oligocene
Originally Cordosphaeridium, subsequently (and now) Operculudinium, thirdly Lingulodinium. Stover and Hardenbol (1994, p.33) retained this species in Operculodinium.
Holotype: Benedek, 1972, pl.9, fig.8; Benedek and Sarjeant, 1981, fig.9, no.5
Age: Middle-Late Oligocene