Protoperidinium oblongum (Aurivillius) Parke et Dodge var. latidorsale Dangeard 1927

A = Cells; B = Ventral part with 1'-plate; C = Plastid-like structures; D = Dorsal view with a long 2a (between arrowheads). (DIC)

SEM

Life-form: Solitary

Size: Length 90-120 µm, width 50-75 µm.

Resting spore:

Note:

Distinctive features: Size, form, 1'-plate is ortho and with a broad hexa 2a

Similar species: Protoperidinium oceanicum

Distribution:

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.

Swedish Meteorological and Hydrological Institute

Department of Marine Ecology, Göteborg University, Sweden