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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 Sarcoptiformes
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Superfamily Otocepheoidea
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Family Tetracondylidae
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Genus Fissicepheus
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Species Fissicepheus amabilis
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Species Fissicepheus chinensis
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Species Fissicepheus clavatus
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Species Fissicepheus claviopsis
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Species Fissicepheus coronarius
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Species Fissicepheus curvisetosus
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Species Fissicepheus elegans
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Species Fissicepheus haradai
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Species Fissicepheus mitis
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Species Fissicepheus mitratus
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Species Fissicepheus nakanei
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Species Fissicepheus ornithorrhynchus
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Species Fissicepheus sitnikovae
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Species Fissicepheus steinmanni
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Species Fissicepheus subclavatus
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Species Fissicepheus vicinus
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