The Echinoid Directory

Family Corystusidae Foster & Philip, 1978, p. 792

[Corystidae Foster & Philip 1978, non Corystidae Samouelle, 1819 (Crustacea)]


 Urechinine holasteroids with:

  • thick-shelled test;
  • pore-pairs double throughout;
  • episternal plates symmetrically placed behind sternal plate and followed by single rostral plate;
  • subanal fasciole surrounding rostral plate.
Palaeocene to Recent; Indo-Pacific.
Remarks Name changed to Corystusidae  by the International Commision on Zoological Nomenclature opinion 2238 (case 3419), December, 2009.