Coccolithophyceae - Calyptrosphaeraceae
Full reference: J.E. Boudreaux and W.W. Hay. 1969. Calcareous nannoplankton and biostratigraphy of the late Pliocene-Pleistocene-Recent sediments in the Submarex cores. Revista Española de Micropaleontología 1(3):249-292
Parent taxon: Prymnesiophyceae according to P. R. Bown and J. R. Young 1997
See also Boudreaux and Hay 1969
Sister taxa: Athenagalea, Biantholithus, Braarudosphaerales, Ceratolithaceae, Coccolithales, Daktylethra, Discoasterales, Ellipsagelosphaeraceae, Ellipsolithus, Gladiolithus, Ilselithina, Isochrysidales, Lanternithus, Minylitha, Neosphaera, Pedinocyclus, Phaeocystales, Prymnesiales, Rhomboasteraceae, Tetralithoides, Transversopontis, Zygodiscales, Prymnesiophycidae, Tetralithus, Cyclicargolithus, Syracosphaerales, Watznaueriales, Stephanolithiales, Goniolithaceae, Eiffellithales, Arkhangelskiales, Eodiscoaster, Podorhabdales, Sphenolithus, Lapideacassaceae, Discoasteroides
Subtaxa: Acuturris Anfractus Bifidalithus Calculites Coccosphaerida Corisphaera Dactylethra Homozygosphaera Isocrystallithus Lacunolithus Lucianorhabdus Metadoga Multipartis Munarinus Octolithus Okkolithus Orastrum Ottavianus Owenia Petrobrasiella Pseudoconus Ramsaya Russellia Saepiovirgata Semihololithus Zebrashapka Zygosphaera
Ecology: passively mobile planktonic "photoautotroph"
Distribution:
• Eocene of North Atlantic (3 collections)
• Paleocene to Eocene of North Atlantic (1)
• Paleocene of Argentina (1), North Atlantic (3)
• Cretaceous of Argentina (12), Austria (1), France (1), Germany (1), Indian Ocean (21), Italy (1), United States (3: Alabama, Georgia)
Total: 48 collections including 59 occurrences