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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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Order Ephemeroptera
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Superfamily Ephemerelloidea
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Family Ephemerellidae
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Genus Ephemerella
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Species Ephemerella alleni
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Species Ephemerella apopsis
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Species Ephemerella aurivillii
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Species Ephemerella catawba
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Species Ephemerella consimilis
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Species Ephemerella dorothea
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Species Ephemerella excrucians
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Species Ephemerella hispida
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Species Ephemerella invaria
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Species Ephemerella maculata
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Species Ephemerella molita
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Species Ephemerella mucronata
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Species Ephemerella needhami
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Species Ephemerella nuda
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Species Ephemerella subvaria
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Species Ephemerella tibialis
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Species Ephemerella unicornis
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Species Ephemerella velmae
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Species Ephemerella verruca
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