Sellaphora Meridionalis Guide
Credit: Marina Potapova
  1. Valves elliptic
  2. Central area bow-tie shaped
  3. Polar bars present

Valves are elliptic, with broadly rounded ends that are only very slightly protracted. The central area is bow-tie shaped, bordered alternating short and long striae. At the valve ends, polar bars present. The external surface of the valve face is smooth, without visible grooves or conopea.