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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Gastrotricha (hairy back worms)
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Class Not assigned
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Order Chaetonotida
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Family Chaetonotidae
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Genus Arenotus
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Genus Aspidiophorus
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Genus Caudichthydium
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Genus Chaetonotus
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Genus Chitonodytes
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Genus Diuronotus
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Genus Fluxiderma
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Genus Halichaetonotus
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Genus Hemichaetonotus
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Genus Heterolepidoderma
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Genus Ichthydium
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Genus Lepidodermella
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Genus Musellifer
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Genus Polymerurus
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Genus Pseudichthydium
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Genus Rhomballichthys
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Genus Undula
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