Protoperidinium conicoides (Paulsen) Balech 1973

A = Ventral part with excavated sulcus (=arrow); B = Dorsal view; C = Cyst (courtesy of Anna Godhe). A&B (DIC), C (BF)

Synonym(s): Peridinium conicoides Paulsen 1905

Life-form: Solitary

Size: Length 45-71 µm, width 45-60 µm.

Resting spore: +


Distinctive features: 1'-plate is ortho and 2a-plate is hexa, sulcus is excavated (=arrow), surface is reticulate with spines

Similar species:

Distribution: Worldwide

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.

Paulsen, O. 1905. On some Peridineae and plankton-diatoms. Medd. komm. for Havundersög.: Ser.: Plankton1(3): 1-7.

Wall, D. & Dale, B.1968b. Modern dinoflagellate cysts and evolution of the Peridiniales. Micropaleontology.14: 265-304.

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Last modified on 15 September, 2006

Swedish Meteorological and Hydrological Institute

Department of Marine Ecology, Göteborg University, Sweden