Gomphoneis Eriense Guide
Credit: Pat Kociolek
  1. Larger valves lanceolate-clavate and angular
  2. Longitudinal lines distinct
  3. Single, distinct stigma present in the central area

Larger valves are lanceolate-clavate and angular, with a slightly protracted headpole and broadly rounded footpole. The raphe is lateral and undulate. Longitudinal lines are distinct and positioned near the axial area. A single, distinct stigma is present in the central area.