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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 Tricladida
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Family Bdellouridae
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Family Bipaliidae
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Family Dendrocoelidae
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Family Dugesiidae
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Family Geoplanidae
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Family Nexilidae
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Family Planariidae
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Family Procerodidae
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Family Rhynchodemidae
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Family Uteriporidae
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