Micracanthodinium claytonii (Holmes) Dodge 1982

A = Cell with many spines emerging along the girdle; B&C = Spines on the epitheca (arrows=basal thicker part); D&E Cells with spines; F = Apical view. All cells from Lugol samples. DIC

Synonym(s): Cladopyxis claytoni Holmes 1956

Life-form: Solitary

Size: Length 12-20 (34) µm.

Resting spore:


Distinctive features: Fine spines orginate from the borders of the girdle

Similar species: Micracanthodinium setiferum

Distribution: North Atlantic, North sea, Skagerrak

Dodge, J. D. 1982. Marine Dinoflagellates of the British Isles. Her Majesty's Stationery Office, London. 303 pp.

Dodge, J. D. 1995. Thecal structure, taxonomy, and distribution of the planktonic dinoflagellate Micracanthodinium setiferum (Gonyaulacales, Dinophyceae). Phycologia. 34: 307-312.

Holmes, R. W. 1956. The annual cycle of phytoplankton in the Labrador Sea, 1950-51. Bulletin Bingham Oceanographic College. 16: 1-74.

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Last modified on 15 September, 2006

Swedish Meteorological and Hydrological Institute


Department of Marine Ecology, Göteborg University, Sweden