PaleoDB taxon number: 255405

Parent taxon: Prymnesiophyceae according to K. Fujioka et al. 1998

Sister taxa: Coccolithales, Discoasterales, Isochrysidales, Phaeocystales, Prymnesiales, Zygodiscales, Calyptrosphaeraceae, Prymnesiophycidae, Goniolithaceae, Watznaueriales, Syracosphaerales, Eiffellithales, Lapideacassaceae, Cyclicargolithus, Sphenolithus, Podorhabdales, Stephanolithiales, Arkhangelskiales, Eodiscoaster

Subtaxa: Calcidiscus leptoporus, Calcidiscus macintyrei

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