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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Arthropoda (arthropods)
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Crustacea (shrimps, crabs, lobsters, water fleas, and relatives)
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Class Maxillopoda
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Order Harpacticoida
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Family Harpacticidae
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Genus Harpacticus
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Species Harpacticus arcticus
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Species Harpacticus chelifer
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Species Harpacticus compressus
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Species Harpacticus compsonyx
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Species Harpacticus confusus
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Species Harpacticus depressus
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Species Harpacticus dubitabilis
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Species Harpacticus falklandi
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Species Harpacticus flexus
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Species Harpacticus furcatus
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Species Harpacticus furcifer
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Species Harpacticus giesbrechti
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Species Harpacticus glaber
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Species Harpacticus gracilis
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Species Harpacticus gurneyi
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Species Harpacticus littoralis
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Species Harpacticus meridionalis
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Species Harpacticus nicaeensis
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Species Harpacticus nipponicus
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Species Harpacticus obscurus
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Species Harpacticus pacificus
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Species Harpacticus ponticus
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Species Harpacticus poppei
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Species Harpacticus pulvinatus
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Species Harpacticus septentrionalis
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Species Harpacticus spinulosus
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Species Harpacticus superflexus
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Species Harpacticus tenellus
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Species Harpacticus trisetosus
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Species Harpacticus uniremis
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