Gomphoneis Angularis Guide
Credit: Pat Kociolek
  1. Valves trullate
  2. Valve length 34-67 ┬Ám
  3. Striae 10-13 in center, 14-16 at poles

Valves trullate, with broadest portion of the valve outline located towards the footpole from the central nodule. Valves are relatively small, 34-67 um in length. Striae number 10-13 in center and 14-16 at the poles.