†order Syracosphaerales Hay 1977 (haptophyte alga)
PaleoDB taxon number: 87650
Parent taxon: Prymnesiophyceae according to J. R. Young et al. 2003
Sister taxa: Coccolithales, Discoasterales, Isochrysidales, Phaeocystales, Prymnesiales, Zygodiscales, Calyptrosphaeraceae, Prymnesiophycidae, Goniolithaceae, Watznaueriales, Eiffellithales, Lapideacassaceae, Cyclicargolithus, Sphenolithus, Calcidiscus, Podorhabdales, Stephanolithiales, Arkhangelskiales, Eodiscoaster
Subtaxa: Calciosoleniaceae, Rhabdosphaeraceae, Syracosphaeraceae
Ecology: passively mobile planktonic "photoautotroph"