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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 Polychaeta
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Order Aciculata
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Family Polynoidae
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Genus Halosydnella
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Species Halosydnella australis
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Species Halosydnella brasiliensis
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Species Halosydnella elegans
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Species Halosydnella fusca
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Species Halosydnella fuscamaculata
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Species Halosydnella galapagensis
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Species Halosydnella grisea
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Species Halosydnella oculata
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Species Halosydnella punctulata
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