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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 Decapoda
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Superfamily Pinnotheroidea
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Genus Aphanodactylus
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Genus Austinixa
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Genus Clypeasterophilus
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Genus Dissodactylus
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Genus Fabia
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Genus Gemmotheres
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Genus Opisthopus
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Genus Orthotheres
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Genus Parapinnixa
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Genus Pinnaxodes
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Genus Pinnixa
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Genus Pinnotheres
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Genus Scleroplax
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Genus Tumidotheres
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Genus Tunicotheres
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Genus Zaops
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Pinnotheridae
pea crabs