Hystrichodinium oligacanthum
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oligacanthum Deflandre and Cookson, 1955, p.255-257, pl.1, fig.1; text-figs.2-3. Holotype: Deflandre and Cookson, 1955, text-fig.2. Backhouse (1988, p.92) considered Heliodinium (as Hystrichodinium) patriciae and Heliodinium (as Hystrichodinium) voigtii to be possible taxonomic junior synonyms of this species. Hystrichodinium oligacanthum was not validly published in Deflandre and Cookson (1954, p.1236) since no description was provided. Age: Albian.
Parent: Hystrichodinium