Synonymer

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Definitioner

Substantiv

  1. (zoology) Any echinoderm of the order Spatangoida, of heart urchins.

Exempel

  • The enlarged rear interambulacrum on the oral side of holasteroids and spatangoids is known as the plastron.
  • Spatangoids constitute a monophyletic group of heart urchins that appears in the early Cretaceous (145 M.Y. ago) and ranges to the Recent.
  • Oval tests with specific ventral morphology for efficient burrowing allowed spatangoids to burrow deeply in sand to avoid gastropod predation.

Böjningsformer

Pluralspatangoids

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