Echinozoa
From Infogalactic: the planetary knowledge core
| Echinozoa | |
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| The melon sea urchin (Echinus melo) in northwest Sardinia | |
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Echinozoa
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† = Extinct |
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The Echinozoa are a subphylum of free-living echinoderms in which the body is essentially globoid with meridional symmetry. They lack arms, brachioles, or other appendages, and do not at any time exhibit pinnate structure.[1] See also List of echinodermata orders.
References
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