Cymbopleura Austriaca Guide
Credit: Loren Bahls
  1. Valves linear-lanceolate to elliptic-lanceolate, up to 107 ┬Ám long
  2. Apices obtusely rounded
  3. Axial area broad
  4. Raphe strongly reverse lateral near proximal ends

Valves are large, linear-lanceolate to elliptic-lanceolate, with obtusely rounded apices. The axial area is broad. The proximal raphe ends are strongly reverse-lateral.