Star-fish which has just resorbed the larva, seen from the back; _b_ madreporic opening. [Please select]
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184 Young Ophiuran which has resorbed the whole larva; _r_ middle plate of back. [Please select]
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Ophiuran which has resorbed the whole larva except the two long arms, _y_ _y'_ limestone rods of young Ophiuran, _r_ middle of back, lettering as in Fig.' [Please select]
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