Cavinula Scutiformis Guide
Credit: Loren Bahls
  1. Valves elliptic
  2. Central area large, orbicular
  3. Areolae near central area enlarged
  4. Axial area widens toward central area
  5. Proximal raphe ends expanded

Cavinula scutiformis has elliptic valves with a large, orbicular central area. The axial area widens gradually toward the central area. Areolae near the central area are enlarged and proximal raphe ends are expanded.