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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 Pycnogonida
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Order Not assigned
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Family Ammotheidae
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Family Austrodecidae
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Family Callipallenidae
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Family Colossendeidae
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Family Endeididae
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Family Nymphonidae
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Family Phoxichilidiidae
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Family Pycnogonidae
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Family Rhynchothoracidae
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