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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Annelida (segmented worms)
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Class Clitellata
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Order Haplotaxida
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Family Tubificidae
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Genus Isochaeta
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Species Isochaeta hamata
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Species Isochaeta nevadana
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Species Isochaeta ovalis
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Species Isochaeta virulenta
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