Reimeria sinuata fo antiqua guide2
  1. Apices broadly capitate
  2. Central, ventral margin tumid
  3. Apical pore fields distinct, ventral

Valves are asymmetric to the apical axis, with a tumid ventral margin. The apices are broadly capitate. A single isolated stigma present at mid-valve, slightly dorsally offset. Apical pore fields are present at ventral margin.