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