Coccolithophyceae - Watznaueriales
Parent taxon: Prymnesiophyceae according to P. R. Bown and J. R. Young 1997
Sister taxa: Athenagalea, Biantholithus, Braarudosphaerales, Ceratolithaceae, Coccolithales, Daktylethra, Discoasterales, Ellipsagelosphaeraceae, Ellipsolithus, Gladiolithus, Ilselithina, Isochrysidales, Lanternithus, Minylitha, Neosphaera, Pedinocyclus, Phaeocystales, Prymnesiales, Rhomboasteraceae, Tetralithoides, Transversopontis, Zygodiscales, Calyptrosphaeraceae, Goniolithaceae, Arkhangelskiales, Prymnesiophycidae, Eiffellithales, Cyclicargolithus, Syracosphaerales, Stephanolithiales, Tetralithus, Discoasteroides, Lapideacassaceae, Sphenolithus, Podorhabdales, Eodiscoaster
Subtaxa: Watznaueriaceae
Ecology: passively mobile planktonic "photoautotroph"
Distribution:
• Oligocene of Germany (1 collection)
• Paleocene of Argentina (4), Tanzania (1), United States (1: South Carolina)
• Cretaceous of Argentina (12), Austria (1), Belgium (1), Canada (7: Alberta), Egypt (6), France (1), Germany (1), Israel (1), Romania (2), Slovakia (2), South Atlantic (4)
• Jurassic of France (1), Germany (10), Morocco (7), Saudi Arabia (15), Spain (115), Switzerland (1)
Total: 194 collections including 632 occurrences