-
-
-
Protoperidinium (pro-toe-perry-din-ee-um) heterotrophic dinoflagellate. This is a cyst, but we can see that the margins of the circumferential groove have projecting margins, and there is an anterior point and two short posterior spines. Phase contrast.
-
Ventral view showing girdle and sulcus. Armouring of the cell is also evident.
-
Theca remaining from a deceased cell showing the grooves in which the flagella lie, and, in profile, the lists or shelves that project around the girdle.
-
A large distinctive species. It has a long apical horn and long divergent antapical horns. P. depressum is a cosmopolitan species.
-
The two faces of ...
-
A medium-sized cell with short antapical horn and and winged antapical spines. The species can be confused with P. pallidum. A distinguishing feature is a prominent winged spines originating from a sulcal list.
-
This micrograph emphasizes the armored character of the genus.
-
An armoured dinoflagellate.
-
The cells are pyriform with a long apical horn and a rounded hypotheca. There are two long, winged antapical spines. The girdle is right handed and bears distinct lists supported by spines.
-
Peridinium divergens.
