basis of record: Heimdal, B.R. (1997). Modern coccolithophorids, in: Tomas, C.R. (Ed.) (1997). Identifying marine phytoplankton. pp. 731-833 (look up in IMIS) [details]
Citation: Guiry, Michael D. (2013). Calyptrosphaera quatridentata Schiller, 1913. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=235902 on 2013-05-23