Coccolithophyceae - Goniolithaceae
Parent taxon: Prymnesiophyceae according to K. Perch-Nielsen 1985
Sister taxa: Athenagalea, Biantholithus, Braarudosphaerales, Ceratolithaceae, Coccolithales, Coccosphaerales, Daktylethra, Discoasterales, Ellipsagelosphaeraceae, Ellipsolithus, Gladiolithus, Ilselithina, Isochrysidales, Lanternithus, Minylitha, Neosphaera, Pedinocyclus, Phaeocystales, Prymnesiales, Rhomboasteraceae, Tetralithoides, Transversopontis, Zygodiscales, Lapideacassaceae, Podorhabdales, Arkhangelskiales, Watznaueriales, Eiffellithales, Syracosphaerales, Tetralithus, Calyptrosphaeraceae, Sphenolithus, Discoasteroides, Stephanolithiales, Eodiscoaster, Prymnesiophycidae, Cyclicargolithus
Subtaxa: Goniolithus
Ecology: passively mobile planktonic "photoautotroph"
Distribution: found only at Frauenweiler (Oligocene of Germany)