Sellaphora Fusticulus Guide
Credit: David Burge
  1. Valves linear with convex margins
  2. Apices weakly capitate
  3. Central area elliptic to circular
  4. Striae radiate, slightly arched

Valves are linear with convex margins. The apices are broadly rounded and weakly capitate. The central area is elliptic to rounded, bordered by shortened striae of unequal length. The striae are radiate and weakly curved toward the valve center.