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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 Polycladida
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Family Callioplanidae
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Family Cestoplanidae
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Family Cryptocelidae
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Family Emprosthoparnygidae
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Family Euryleptidae
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Family Hoploplanidae
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Family Latocestidae
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Family Leptoplanidae
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Family Pericelidae
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Family Planoceridae
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Family Plehniidae
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Family Polyposthiidae
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Family Prosthiostomidae
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Family Pseudoceritidae
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Family Stylochidae
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