''Acanthocidaris'' is a genus 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 family

Cidaridae Cidaridae is a family of sea urchins in the order Cidaroida. Description and characteristics Cidarid sea urchins are characterized by their stout skeleton : the test is thick and hard, with massive perforated tubercles (never crenulated) surr ...

. The species of this genus are found in Australia, Indian Ocean and

Malesia Malesia is a biogeographical region straddling the Equator and the boundaries of the Indomalayan and Australasian realms, and also a phytogeographical floristic region in the Paleotropical Kingdom. It has been given different definitions. The ...

. Species: *'' Acanthocidaris curvatispinis'' *'' Acanthocidaris hastigera'' *'' Acanthocidaris maculicollis''

References

Cidaridae Cidaroida genera {{echinoidea-stub