Cordosphaeridium xanthium
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"xanthium" Benedek, 1972, p.27–28, pl.9, fig.8; text-fig.9. Emendation: Benedek and Sarjeant, 1981, p.342–343, as Lingulodinium xanthium. Holotype: Benedek, 1972, pl.9, fig.8; Benedek and Sarjeant, 1981, fig.9, no.5. NOW Operculodinium. Originally Cordosphaeridium, subsequently (and now) Operculodinium, thirdly Lingulodinium. Age: middle-late Oligocene.
Parent: Cordosphaeridium