Goniodomid dinoflagellate, rounded or angular body; cingulum median but displaced by one width on right ventral side; nucleus median and u-shaped; chloroplasts present; some species form chains; many species produce PSP toxins.

Depth range based on 12765 specimens in 20 taxa.
Water temperature and chemistry ranges based on 2422 samples.

Environmental ranges
  Depth range (m): 0 - 500
  Temperature range (°C): -2.058 - 27.590
  Nitrate (umol/L): 0.232 - 14.664
  Salinity (PPS): 24.378 - 39.081
  Oxygen (ml/l): 4.600 - 9.192
  Phosphate (umol/l): 0.071 - 1.268
  Silicate (umol/l): 0.927 - 39.813

Graphical representation

Depth range (m): 0 - 500

Temperature range (°C): -2.058 - 27.590

Nitrate (umol/L): 0.232 - 14.664

Salinity (PPS): 24.378 - 39.081

Oxygen (ml/l): 4.600 - 9.192

Phosphate (umol/l): 0.071 - 1.268

Silicate (umol/l): 0.927 - 39.813
 
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