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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 Heptagenioidea
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Family Heptageniidae
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Genus Anepeorus
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Genus Cinygma
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Genus Cinygmula
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Genus Ecdyonurus
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Genus Epeorus
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Genus Heptagenia
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Genus Ironodes
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Genus Leucrocuta
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Genus Maccaffertium
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Genus Macdunnoa
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Genus Nixe
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Genus Raptoheptagenia
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Genus Rhithrogena
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Genus Spinadis
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Genus Stenacron
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Genus Stenonema
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