Genus: Ceratium | Dinoflagellate
Monterey Bay species: C. furca, C. lineatum, C. pentagonum, C. fusus, C. platycorne
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Description: Large, diverse genus. Armored, gonyaulacoid body, two to four hollow horns. Horns open or closed. Chloroplasts present.
Cell Size: Width = 5-50um, Length =70-500um
Distribution: Cosmopolitan, neritic, cold and warm waters. C. furca is very common in Monterey Bay and often forms dense blooms.