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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Arthropoda (arthropods)
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Chelicerata (spiders, mites, scorpions, and relatives)
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Class Arachnida
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Order Not assigned
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Superfamily Chthonioidea
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Family Chthoniidae
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Genus Afrochthonius
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Genus Allochthonius
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Genus Anisoditha
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Genus Aphrastochthonius
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Genus Apochthonius
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Genus Austrochthonius
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Genus Caribchthonius
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Genus Centrochthonius
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Genus Chiliochthonius
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Genus Chthonius
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Genus Congochthonius
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Genus Drepanochthonius
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Genus Francochthonius
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Genus Kleptochthonius
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Genus Lagynochthonius
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Genus Malcolmochthonius
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Genus Maorichthonius
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Genus Mexichthonius
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Genus Mundochthonius
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Genus Neochthonius
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Genus Paraliochthonius
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Genus Pseudochthonius
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Genus Pseudotyrannochthonius
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Genus Sathrochthoniella
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Genus Sathrochthonius
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Genus Selachochthonius
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Genus Spelyngochthonius
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Genus Stygiochthonius
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Genus Troglochthonius
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Genus Tyrannochthoniella
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Genus Tyrannochthonius
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Genus Vulcanochthonius
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