Radial symmetry in adults and bilateral symmetry in juveniles（幼体） in the echinodermata (棘皮动物）.
Radial symmetry in adults and bilateral symmetry in juveniles（幼体） in the echinodermata (棘皮动物）.
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Radial symmetry in adults and bilateral symmetry in juveniles（幼体） in the echinodermata (棘皮动物）.