Synset:Echinoidea class Echinoidea
Member Holonyms:Echinodermata phylum Echinodermata
Hypernyms:class
Inherited Hypernyms:echinoideaclasstaxonomic groupbiological groupgroupabstractionentity
Member Meronyms:Exocycloida order Exocycloida sea urchin Spatangoida order Spatangoida