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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 Habrotrochidae
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Genus Otostephanos
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Species Otostephanos annulatus
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Species Otostephanos auriculatus
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Species Otostephanos cuspidilabris
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Species Otostephanos donneri
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Species Otostephanos jersabeki
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Species Otostephanos kostei
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Species Otostephanos macrantennus
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Species Otostephanos monteti
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Species Otostephanos mundiformis
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Species Otostephanos regalis
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Species Otostephanos torquatus
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