Cerataulina pelagica (Cleve) Hendey 1937

A = Chain (DIC); B = Chain (PC); C = Cells at two focal planes (arrowhead=wing-like extension) (DIC)

Valve in SEM

Synonym(s): Cerataulus bergonii H. Peragallo 1892

Life-form: Solitary or chain-forming

Size: Diameter = 7-56 µm pervalvar axis = 55-120 µm

Resting spore:


Distinctive features: Small wing-like extensions

Similar species: Cerataulina bicornis

Distribution: Worldwide

Drebes, G. 1974. Marines Phytoplankton, Eine Auswahl der Helgoländer Planktonalgen (Diatomeen, Peridineen). Georg Thieme Verlag, Stuttgart. 186 pp.

Hasle, G. & Syvertsen, E. 1980. The diatoms genus Cerataulina: Morphology and taxonomy. Bacillaria. 3: 79-113.

Hasle, G. R. & Syvertsen, E. E. 1996. Marine diatoms. In: Tomas, C. R. (ed.) Identifying marine diatoms and dinoflagellates. Academic Press, Inc., San Diego, p. 5-385.

Hendey, N. I. 1964. An introductory account of the smaller algae of British coastal waters. Part 5: Bacillariophyceae (Diatoms). HSMO, London. 317 pp.

  Copyright © 1996-2006, Mats Kuylenstierna & Bengt Karlson All rights reserved.
Last modified on 15 September, 2006

Swedish Meteorological and Hydrological Institute


Department of Marine Ecology, Göteborg University, Sweden