Punctastriata Mimetica Guide
Credit: Eduardo Morales, Barry Rosen and Sarah Spaulding
  1. Valves variable
  2. Striae formed of net-like areolae
  3. Spines positioned on costae

Valves are variable in shape - cruciform, rhomboid, lanceolate to oval. Striae are formed by net-like areolae. Spines are present, solid and positioned on a costa.