Aneumastus Pseudotuscula Guide
Credit: Pat Kociolek
  1. Striae 12-16 in 10 µm
  2. Apices protracted
  3. Areolae evenly arranged

Valves are lanceolate with protracted apices. The axial area is relatively straight, expanded in the center to form an unequal, irregular rectangular central area. Areolae are small, evenly arranged and nearly square, to dash-like.