A = Ventral part with excavated sulcus (=arrow); B = Dorsal view; C = Cyst (courtesy of Anna Godhe). A&B (DIC), C (BF)
Life-form: Solitary
Size: Length 45-71 µm, width 45-60 µm.
Resting spore: +
Note:
Distinctive features: 1'-plate is ortho and 2a-plate is hexa, sulcus is excavated (=arrow), surface is reticulate with spines
Similar species:
Distribution: Worldwide
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.
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.