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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 Trematoda
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Order Echinostomida
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Family Balfouriidae
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Family Botulidae
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Family Brumptidae
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Family Campululidae
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Family Cathaemasiidae
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Family Cyclocoelidae
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Family Echinostomatidae
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Family Fasciolidae
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Family Haploporidae
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Family Haplosplanchnidae
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Family Heronimidae
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Family Megaperidae
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Family Mesometridae
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Family Microscaphidiidae
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Family Notocotylidae
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Family Nudacotylidae
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Family Opisthotrematidae
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Family Orchipedidae
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Family Paramphistomatidae
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Family Philophthalmidae
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Family Pronocephalidae
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Family Psilostomatidae
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Family Rhopaliidae
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