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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 Tetragonicipitidae
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Genus Tetragoniceps
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Species Tetragoniceps arenicolous
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Species Tetragoniceps bergensis
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Species Tetragoniceps bookhouti
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Species Tetragoniceps brevicauda
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Species Tetragoniceps brownei
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Species Tetragoniceps dubius
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Species Tetragoniceps longicaudata
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Species Tetragoniceps melleolatus
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Species Tetragoniceps pacificus
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Species Tetragoniceps prima
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Species Tetragoniceps scotti
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Species Tetragoniceps truncata
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