Corystusidae is a family of
echinoderms
An echinoderm () is any member of the phylum Echinodermata (). The adults are recognisable by their (usually five-point) radial symmetry, and include starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers, as well as the sea li ...
belonging to the order
Holasteroida
Holasteroida is an order of irregular sea urchins.
Characteristics
These irregular sea urchins are characterized by a particularly marked bilateral symmetry, including for the apical system, which is highly elongated. In some contemporary ab ...
.
Genera:
* ''
Cardabia''
Foster & Philip, 1978
* ''
Corystus''
Pomel, 1883
* ''
Galeraster''
* ''
Huttonechinus''
Foster & Philip, 1978
References
Holasteroida
Echinoidea genera
{{echinoidea-stub