Spatangoida

Translingual right|thumb|Spatangus purpureus species Etymology From mul Spatangus oida. Proper noun order class Echinoidea the heart urchins Hypernyms order ; Euechinoidea subclass - subclass; Irregularia infraclass - infraclass Hyponyms order Asterostomatina suborder, Hemiasterina suborder, Holasterina suborder, Micrasterina suborder, Toxasterina suborder suborders Aeropsidae family, Asterostomatidae family, Brissidae family, Eupatagidae family, Eurypatagidae family, Hemiasteridae family, Loveniidae family, Macropneustidae family, Maretiidae family, Micrasteridae family, Palaeostomatidae family, Palaeotropidae family, Paleopneustidae family, Pericosmidae family, Prenasteridae family, Schizasteridae family, Spatangidae family - families Coordinate terms order Cassiduloida order, Clypeasteroida order, Echinolampadoida order, Holasteroida order References