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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 Cryptochiroidea
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Genus Cryptochirus
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Genus Hapalocarcinus
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Genus Neotroglocarcinus
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Genus Opecarcinus
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Genus Pelycomaia
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Genus Pseudocryptochirus
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Genus Pseudohapalocarcinus
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Genus Troglocarcinus
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Genus Utinomiella
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Cryptochiridae
gall crabs