The Echinoid Directory

Family Eoscutellidae Durham, 1955, p. 156


 Scutellidea with:

  • basicoronal circlet pentastellate with interambulacral elements strongly projecting and extending to distal end of second pair of ambulacral plates;
  • periproct marginal to submarginal;
  • no lunules or notches;
  • interambulacral zones tapered towards ambitus and less than 20% ambulacral width; food grooves confined to ambulacral zones.
  Middle to Upper Eocene; western USA.