†family Rhagodiscaceae Hay 1977 (haptophyte alga)
Coccolithophyceae - Eiffellithales - Rhagodiscaceae
Parent taxon: Eiffellithales according to P. R. Bown and J. R. Young 1997
Sister taxa: Chiastozygaceae, Eiffellithaceae
Subtaxa: Calcicalathina Percivalia Rhagodiscus
Ecology: passively mobile planktonic "photoautotroph"
Distribution:
• Miocene of North Pacific (1 collection)
• Paleocene of Argentina (1)
• Cretaceous of Argentina (17), Austria (1), France (1), Germany (1), Indian Ocean (30), North Pacific (3), South Atlantic (2), Spain (58)
Total: 115 collections including 163 occurrences