Diatoms of North AmericaDiatoms of North America
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Guide to Tursiocola cymbelloides

Frankovich, Ashworth and M.J.Sullivan 2026

Tursiocola cymbelloides guide
  1. Valves strongly dorsiventral
  2. Valve apices acute
  3. Butterfly structure narrow bar
  4. Raphe on valve mantle

Valves are strongly dorsiventral, with acute apices. The butterfly-like structure appears as a narrow bar. The raphe is located on the valve mantle.