Coccolithophyceae - Ceratolithaceae
Parent taxon: Coccolithophyceae according to R. E. Norris 1965
Sister taxa: Biantholithus, Braarudosphaerales, Coccolithales, Daktylethra, Discoasterales, Ellipsagelosphaeraceae, Ellipsolithus, Gladiolithus, Ilselithina, Isochrysidales, Lanternithus, Minylitha, Neosphaera, Pedinocyclus, Phaeocystales, Prymnesiales, Rhomboasteraceae, Tetralithoides, Transversopontis, Zygodiscales, Watznaueriales, Eiffellithales, Tetralithus, Prymnesiophycidae, Stephanolithiales, Syracosphaerales, Eodiscoaster, Podorhabdales, Goniolithaceae, Sphenolithus, Arkhangelskiales, Discoasteroides, Lapideacassaceae, Calyptrosphaeraceae, Cyclicargolithus
Subtaxa: Amaurolithus Angulolithina Ceratolithus Florisphaera Nicklithus Orthorhabdus
Type: Ceratolithus
Ecology: passively mobile planktonic "photoautotroph"
Distribution: