(Grunow ex Schmidt) D.G.Mann and Stickle in Round et al. 1990
Credit: Loren Bahls
Valves elliptic
Central area large, orbicular
Areolae near central area enlarged
Axial area widens toward central area
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.