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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 Siphonostomatoida
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Family Pennellidae
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Genus Cardiodectes
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Genus Haemobaphes
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Genus Lernaeenicus
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Genus Lernaeocera
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Genus Lernaeolophus
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Genus Peniculus
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Genus Pennella
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Genus Phrixocephalus
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Genus Sarcotretes
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Genus Trifur
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