Eunotia Tetraodon Guide
Credit: Loren Bahls
  1. Dorsal and ventral margins highly arched
  2. Dorsal margin with 4 undulations
  3. Apices broad, obtusely rounded

Eunotia tetraodon has large valves with highly arched dorsal and ventral margins. The dorsal margin has a constant 4 undulations. Apices are broad and obtusely rounded.