Classification of the family Ephemeridae
Fm. Ephemeridae Latreille 1810 [burrowing mayfly]
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G. Ephemera Linnaeus 1758
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†Ephemera exsucca Scudder 1890
†Ephemera howarthi Cockerell 1908
†Ephemera immobilis Scudder 1890
†Ephemera interempta Scudder 1890
†Ephemera macilenta Scudder 1890
†Ephemera pumicosa Scudder 1890
†Ephemera tabifica Scudder 1890
Subfm. Hexageniinae McCafferty 1991
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