PaleoDB taxon number: 87660
Parent taxon: Prymnesiophyceae according to P. R. Bown and J. R. Young 1997
Sister taxa: Coccolithales, Discoasterales, Isochrysidales, Phaeocystales, Prymnesiales, Zygodiscales, Prymnesiophycidae, Goniolithaceae, Watznaueriales, Syracosphaerales, Eiffellithales, Lapideacassaceae, Cyclicargolithus, Sphenolithus, Calcidiscus, Podorhabdales, Stephanolithiales, Arkhangelskiales, Eodiscoaster
Subtaxa: Acuturris, Anfractus, Bifidalithus, Calculites, Coccosphaerida, Isocrystallithus, Lacunolithus, Lucianorhabdus, Metadoga, Multipartis, Munarinus, Octolithus, Okkolithus, Orastrum, Ottavianus, Owenia, Petrobrasiella, Pseudoconus, Ramsaya, Russellia, Saepiovirgata, Semihololithus, Zebrashapka
Ecology: passively mobile planktonic "photoautotroph"