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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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Order Ophidiiformes
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Genus Carapus
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Genus Echiodon
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Genus Encheliophis
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Genus Eurypleuron
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Genus Onuxodon
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Genus Pyramodon
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Genus Snyderidia
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Genus Tetragondacnus
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