Cymbopleura Perprocera Guide
Credit: Loren Bahls
  1. Axial area wide
  2. Apices narrow beaked
  3. Proximal raphe ends weakly expanded

Cymbopleura perprocera has large lanceolate valves with narrow beaked apices. The axial area is one-fourth to one-third the width of the valve. Proximal raphe ends are weakly expanded and tipped slightly to the ventral side. Areolae in the striae number 16-22 in 10 ┬Ám