Coccolithophyceae - Phaeocystales
Parent taxon: Coccolithophyceae according to B. Edvardsen et al. 2000
Sister taxa: Biantholithus, Braarudosphaerales, Ceratolithaceae, Coccolithales, Daktylethra, Discoasterales, Ellipsagelosphaeraceae, Ellipsolithus, Gladiolithus, Ilselithina, Isochrysidales, Lanternithus, Minylitha, Neosphaera, Pedinocyclus, Prymnesiales, Rhomboasteraceae, Tetralithoides, Transversopontis, Zygodiscales, Lapideacassaceae, Goniolithaceae, Syracosphaerales, Eiffellithales, Watznaueriales, Tetralithus, Prymnesiophycidae, Podorhabdales, Arkhangelskiales, Discoasteroides, Eodiscoaster, Calyptrosphaeraceae, Stephanolithiales, Cyclicargolithus, Sphenolithus
Subtaxa: none
Ecology: passively mobile planktonic "photoautotroph"
Distribution: there are no occurrences of Phaeocystales in the database