A&B = Cell in ventral and apical views; C&D = Ventral views with 1'-plate; E&F = Dorsal views (arrowhead=2a plate) (DIC)
Life-form: Solitary
Size: Length 50-95 µm.
Resting spore: +
Note: There are two types of cysts reported (Inoue 1990)
Distinctive features: Shape of cell, 1'-plate and 2a-plate
Similar species: Protoperidinium conicum Protoperidinium marielebourae Protoperidinium obtusum
Distribution: Widely
Literature:
Balech, E. 1976b. Sur quelques Protoperidinium
(Dinoflagellata). Vie et Milieu. 26: 27-46.
Inoue, H. 1990. Dinoflagellates. In "Red tide organisms in Japan-An illustrated taxonomic guide". (Y. Fukuyo, H. Takano, M. Chihara & K. Matsuoka eds) Uchida Rokakuho, Tokyo. pp. 150-151
Pavillard, M. J. 1916c. Recherches sur les péridiniens du Golfe du Lion. Travail de l'Institut de Botanique de l'Université de Montpellier, Série mixte-Mémoire. 4: 9-70.
Wall, D. & Dale, B. 1968b. Modern dinoflagellate cysts and evolution of the Peridiniales. Micropaleontology. 14: 265-304.