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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 Pseudotyrannochthonius
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Species Pseudotyrannochthonius dentifer
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Species Pseudotyrannochthonius giganteus
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Species Pseudotyrannochthonius gigas
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Species Pseudotyrannochthonius gracilis
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Species Pseudotyrannochthonius jonesi
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Species Pseudotyrannochthonius kubotai
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Species Pseudotyrannochthonius rossi
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Species Pseudotyrannochthonius typhlus
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Species Pseudotyrannochthonius utahensis
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