The Echinoid Directory

Suborder Scutellina Haekel, 1896, p. 231


 Clypeasteroids with:

  • internal buttressing present; variably developed;
  • petaloid areas composed of simple primary plates throughout;
  • perignathic girdle consisting of five interradial pegs.
Lower Eocene to Recent; worldwide.
Remarks The following genus probably belongs here but cannot be placed with certainty:

Tournoueraster Lambert, in Lambert & Thiery 1914, p. 294