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About: Spatangoida     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:Insect, within Data Space : dbpedia.org associated with source document(s)

Type: eukaryoteinsect New Facet based on Instances of this Class

The heart urchins or Spatangoida are an order of sea urchins. Their body is a somewhat elongated oval in form, and is distinguished by the mouth being placed towards one end of the animal, and the anus towards the other. As a result, heart urchins, unlike most other sea urchins, are bilaterally symmetrical, and have a distinct anterior surface. The presence and position of the mouth and anus typically give members of this group the distinct "heart" shape from which they get their name.