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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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Family Acanthametropodidae
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Family Ameletidae
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Family Ameletopsidae
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Family Ametropodidae
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Family Baetidae
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Family Baetiscidae
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Family Behningiidae
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Superfamily Caenoidea
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Family Coloburiscidae
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Superfamily Ephemerelloidea
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Superfamily Ephemeroidea
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Superfamily Euthyplocioidea
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Superfamily Heptagenioidea
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Family Leptophlebiidae
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Family Metretopodidae
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Family Nesameletidae
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Family Oniscigastridae
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Superfamily Potamanthoidea
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Family Rallidentidae
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Family Siphlaenigmatidae
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Family Siphlonuridae
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