159,409 species and infraspecific names are in the database, 22,546 images, 61,999 bibliographic items, 463,214 distributional records.

Calyptrolithina Heimdal, 1982

Classification:
Empire Eukaryota
Kingdom Chromista
Subkingdom Hacrobia
Phylum Haptophyta
Class Coccolithophyceae
Subclass Prymnesiophycidae
Order Coccolithales
Family Calyptrosphaeraceae

Holotype species: Calyptrolithina divergens (Halldal & Markali) Heimdal

Original publication and holotype designation: Heimdal, B.R. (1982). Validation of some names of Zygosphaera Kamptner. International Nannoplankton Association Newsletter 4: 52-56.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Jordan, R.W., Cros, L. & Young, J.R. (2004). A revised classification scheme for living haptophytes. Micropaleontology 50(Suppl. 1): 55-79.

Comments: Following the recent observations that many holococcolithophores are phases in the life cycles of heterococcolithophores, the family Calyptrosphaeraceae is now known to be polyphyletic, so Jordan et al. recommend abandoning its use. However, until all or most holococcolith-bearing taxa can be transferred into other existing families, they consider that it is wise to keep them together. Heimdal (1997: 752) records this genus as a member of the Order Coccosphaerales, Family Calyptrosphaeraceae.

Numbers of names and species: There are 9 species names in the database at present, as well as 2 infraspecific names. Of the species names, 6 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

References
Norris, R.E. (1985). Indian Ocean nannoplankton. II. Holococcolithophorids (Calyptrosphaeraceae, Prymnesiophyceae) with a review of extant genera. Journal of Phycology 21: 619-641, 57 figs, 1 table.

Heimdal, B.R. (1996). Modern coccolithophorids. In: Identifying marine phytoplankton. (Tomas, C.R. Eds), pp. 731-834. San Diego: Academic Press.

Verification of data
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Created: 16 April 2003 by M.D. Guiry

Verified by: 23 September 2014 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=45220

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 25 October 2020.

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