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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Deuterostomia (deuterostomes)
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Craniata (craniates)
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Euteleostomi (bony vertebrates)
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Genus Atractodenchelys
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Genus Diastobranchus
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Genus Dysomma
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Genus Dysommina
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Genus Haptenchelys
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Genus Histiobranchus
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Genus Ilyophis
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Genus Linkenchelys
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Genus Meadia
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Genus Simenchelys
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Genus Synaphobranchus
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Genus Thermobiotes
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