†superfamily Heptagenioidea (mayfly)
Parent taxon: Ephemeroptera according to W. P. McCafferty 1990
Sister taxa: Aenigmephemeridae, Alulata, Aphelophlebodidae, Babidae, Clephemera, Costalimella nordestina, Durlophlebia, Epeoromimidae, Ephemera oeningensis, Euplectoptera, Libanoephemera, Metretopus henningseni, Parabaetis, Schistonota, Triplosobidae, Turfanerella, Protereismidae, Hexagenitidae
Subtaxa: none
Ecology:
Distribution: there are no occurrences of Heptagenioidea in the database