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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Annelida (segmented worms)
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Class Pogonophora
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Order Thecanephria
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Family Lamellisabellidae
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Family Polybrachiidae
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Family Sclerolinidae
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Family Spirobrachiidae
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