411 REFERENCE · Wiktionary
Echinoidea
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Translingual
right|thumb|Echinus esculentus species
Etymology
mul Echinus oidea
Proper noun
class phylum Echinodermata sea urchins and sand dollars
Hypernyms
class ; Echinozoa subphylum - subphylum
Hyponyms
class Euechinoidea subclass (almost all extant species), Perischoechinoidea subclass (primitive and extinct sea urchins) subclasses
OR
class per Ruggiero Cidaroidea subclass, Euechinoidea subclass - subclasses
Coordinate terms
class per Ruggiero Holothuroidea class
References
Sea urchin
1