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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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Class Malacostraca
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Order Isopoda
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Family Gnathiidae
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Genus Bathygnathia
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Genus Bythognathia
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Genus Caecognathia
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Genus Elaphognathia
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Genus Euneognathia
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Genus Gibbagnathia
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Genus Gnathia
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Genus Monodgnathia
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Genus Paragnathia
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Genus Praniza
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Genus Thaumastognathia
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