| spatangoid | <zoology> Of or pertaining to the Spatangoidea. One of the Spatangoidea. Source: Websters Dictionary (01 Mar 1998) |
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| spatangoidea | <zoology> An order of irregular sea urchins, usually having a more or less heart-shaped shell with four or five petal-like ambulacra above. The mouth is edentulous and situated anteriorly, on the under side. Origin: NL. See Spatangus, and -oid. Source: Websters Dictionary (01 Mar 1998) |
| spatangoid | heart-shaped sea urchins |
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