Cymbopleura Sublanceolata2 Guide
Credit: Loren Bahls
  1. Valves lanceolate, slightly dorsiventral
  2. Ventral margin arched
  3. Central area large, rounded rhomboid
  4. Raphe lateral

Valves are lanceolate and slightly dorsiventral with arched, rather than flat, ventral margins. The central area is a large, rounded rhomboid. Areolae are very fine (~ 35 in 10 ┬Ám) and the raphe is lateral.