Spatangoid
"Spatangoid" in a Sentence (3 examples)
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.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.