free-swimming stalkless crinoid with ten feathery arms; found on muddy sea bottoms.
自由飘浮无柄海合,有十只羽状手;于泥海底。
free-swimming stalkless crinoid with ten feathery arms; found on muddy sea bottoms.
自由飘浮无柄海合,有十只羽状手;于泥海底。
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