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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Rotifera (wheel or whirling animals)
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Class Eurotatoria
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Order Bdelloidea
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Family Adinetidae
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Family Habrotrochidae
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Family Philodinavidae
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Family Philodinidae
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