163,329 species and infraspecific names are in the database, 22,769 images, 62,933 bibliographic items, 478,466 distributional records.

Pontosphaera Lohmann, 1902

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

Lectotype species: Pontosphaera syracusana Lohmann

Original publication:Lohmann, H. (1902). Die Coccolithophoridae, eine Monographie der Coccolithen bildenden Flagellaten, zugleich ein Beitrag zur Kenntnis des Mittelmeerauftriebs. Archiv für Protistenkunde 1: 89-165, pls IV-VI.
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Type designated in Loeblich, A.R. & Tappan, H. 1963 (1963). Type fixation and validation of certain calcareous nannoplankton genera. Proceedings of the Biological Society of Washington 76: 191-196.

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.

Description: Geisselpol der Schale von Coccolithen bedeckt, ohne Mündung. Die Geissel tritt durch eine Pore nach außen. Die Coccolithen sind meist scheibenförmig mit verdicktem Rande, selten napfförmig; im letzteren Falle liegen sie aber immer mit ihrer Fläche der Schalenmembran auf. Die Zelle enthält 1-2 große, platten- förmige Chromatophoren. Soweit beobachtet, ist stets nur eine Geissel vorhanden. Die Schalenneubildung unter Degeneration der alten Schale ist eine sehr lebhafte, so daß Individuen mit zwei oder drei Schalen niebt gerade selten sind.

Origin of description: this description is from the original publication; it may have been modified slightly.

Numbers of names and species: There are 41 species names in the database at present, of which 30 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
Heimdal, B.R. (1996). Modern coccolithophorids. In: Identifying marine phytoplankton. (Tomas, C.R. Eds), pp. 731-834. San Diego: Academic Press.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Created: 16 April 2003 by M.D. Guiry

Verified by: 25 February 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=46059

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 18 September 2021.

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