Coccolithophyceae - Arkhangelskiales
Parent taxon: Prymnesiophyceae according to P. R. Bown and J. R. Young 1997
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, Syracosphaerales, Calyptrosphaeraceae, Sphenolithus, Cyclicargolithus, Tetralithus, Discoasteroides, Watznaueriales, Stephanolithiales, Goniolithaceae, Eodiscoaster, Lapideacassaceae, Eiffellithales, Prymnesiophycidae, Podorhabdales
Subtaxa: Arkhangelskiellaceae Kamptneriaceae
Ecology: passively mobile planktonic "photoautotroph"
Distribution:
• Pliocene of South Pacific (1 collection)
• Paleocene of Argentina (6), Indian Ocean (2), South Atlantic (1)
• Cenozoic of Indian Ocean (4)
• Cretaceous to Paleogene of Indian Ocean (2), North Atlantic (1)
• Cretaceous of Argentina (28), Belgium (1), Canada (5: Alberta), Egypt (1), France (1), Indian Ocean (169), Israel (1), North Atlantic (10), North Pacific (1), Romania (1), South Atlantic (9), South Pacific (1), Tanzania (1), United States (3: Alabama, Tennessee)
Total: 249 collections including 565 occurrences