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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Platyhelminthes (flatworms)
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Class Turbellaria
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Order Proseriata
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Family Archimonocelididae
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Family Coelogynoporidae
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Family Monocelididae
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Family Monotoplanidae
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Family Nematoplanidae
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Family Not assigned
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Family Otomesostomatidae
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Family Otoplanidae
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Family Plagiostomidae
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Family Polystyliphoridae
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