The Echinoid Directory

Family Toxopneustidae Troschel, 1872, p. 38

Diagnosis Regular echinoids with:
  • ambulacral plates compound in the echinoid style (lowest element dominant);
  • peristome margin with sharp and prominent buccal notches;
  • tubercles imperforate and non-crenulate;
  • lantern camarodont, with keeled teeth and epiphyses united above foramen magnum;
Range Eocene to Recent; worldwide