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Click on images for larger format |
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Name derivation: |
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Morphology: |
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Helicosphaera Kamptner 1954; 4 of 37 species descriptions are currently accepted taxonomically (Guiry and Guiry 2013). Order Zygodiscales; Family Helicosphaeraceae
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Morphology: |
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Ellipsoid unicells, 12 - 28 µm long and wide depending on species. Apical opening. Coccoliths are long elliptical placoliths (upper and lower ‘shields’ connected with a tube). |
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Similar genera: |
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Habitat: |
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Marine plankton. |
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References: |
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Guiry, M.D. and G.M. Guiry 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 30 April 2013. Heimdal, B.R. 1993. Modern coccolithophorids. In: Identifying marine phytoplankton. (Tomas, C.R. Eds), pp. 731-834. San Diego: Academic Press. |
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