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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 Not assigned
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Family Arenicolidae
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Genus Arenicola
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Species Arenicola brasiliensis
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Species Arenicola cristata
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Species Arenicola glacialis
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Species Arenicola marina
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