gambierdiscus belizeanus gambierdiscus belizeanus gambierdiscus belizeanus is a species of dinoflagellate, first found in belize. gambierdiscus belizeanus scientific classification domain: eukaryota clade: diaphoretickes clade: sar clade: alveolata phylum: myzozoa superclass: dinoflagellata class: dinophyceae order: gonyaulacales family: ostreopsidaceae genus: gambierdiscus species: g. belizeanus binomial name gambierdiscus belizeanusfaust, 1995 gambierdiscus belizeanus cells are 53–67 pm long, 54–63 μm wide, and 92–98 μm in dorsoventral depth. cells are deeply areolated, ellipsoid in apical view, and compressed anteroposteriorly. its cells are identified by their long, narrow, pentagonal, posterior intercalary plate (1p) wedged between the wide postcingular plates 2″’and 4″; 1p occupies approximately 20% of the width of the hypotheca.