''Acanthocidaris'' is a genus of

echinoderms An echinoderm () is any animal of the phylum Echinodermata (), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as larv ...

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) su ...

. 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. It is a phytogeographical floristic region in the Paleotropical kingdom. It was first recognized as a distinct region ...

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

References

Cidaridae Cidaroida genera {{echinoidea-stub