Word
Echinoidea, n.
sea urchins and sand dollars
<noun.animal>
Echinoidea
class Echinoidea
semantic pointers
member holonym
Echinodermata, phylum Echinodermata
hypernym
class
member meronym
sea urchin
Exocycloida, order Exocycloida
Spatangoida, order Spatangoida