A = Ventral view with sulcus and girdle; B-D = Nucleus in the middle of cell. Observe the thick double nuclear membrane. (BF)
Life-form: Solitary
Size: length 65-80 (145) µm.
Resting spore:
Note: The form of the cell is very variable
Distinctive features: The nucleus has a characteristic double-membrane
Similar species:
Distribution: Pacific, Skagerrak, Kattegat
Literature:
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.
Kofoid, C. A. & Swezy, O. 1921. The free-living unarmored dinoflagellates. Mem. Univ. California. 5: 1-562
Schiller, J. 1933. Dinoflagellatae (Peridineae) in monographischer Behandlung. Teil 1. In Rabenhorst's Kryptogamen-Flora. 10, III: 617 pp.