Stomopneustoida

Stomopneustidae is a family of echinoderms belonging to the order Stomopneustoida.

Glyptocidaridae is a family of sea urchins in the order Stomopneustoida. It contains a single genus, Glyptocidaris, described by Alexander Agassiz in 1864, with one extant species, Glyptocidaris crenularis. M. Jensen erected the family in 1982 on the basis of a cladistic analysis of Euechinoidea. The species is found in the northwest Pacific Ocean, from Japan to Korea and northern China.