Rank Subphylum | Higher classification Eleutherozoa | |
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Lower classifications Sea urchin, Sea cucumber | ||
Echinozoa is a subphylum of free-living echinoderms in which the body is essentially globoid with meridional symmetry. Echinozoans lack arms, brachioles, or other appendages, and do not at any time exhibit pinnate structure.
References
Echinozoa Wikipedia(Text) CC BY-SA