A = Dorsal view upper focus; B = Dorsal view lower focus (arrow= s-formed sulcus on epicone). A living cell (BF)
Life-form: Solitary
Size: Length 25-40 µm, width 21-31 µm.
Resting spore:
Note:
Distinctive features: Sulcus forming a bi-sigmoid curve on the epicone. Chloroplasts absent
Similar species:
Distribution:
Literature:
Hulburt, E. M. 1957. The taxonomy of unarmored Dinophyceae of shallow
embayments on Cape Cod, Massachusetts. Biological Bulletin. 112:
196-219.
Hansen, G. & Larsen, J. 1992. Dinoflagellater i danske farvande. In: Thomsen, H. A. (ed.) Plankton i de indre danske farvande. Havforskning fra Miljøstyrelsen, Copenhagen, p. 45-155.