Superfamily Ephemeroidea (mayfly)
Parent taxon: Ephemeroptera according to W. P. McCafferty 1990
Sister taxa: Aenigmephemeridae, Babidae, Caenoephemera, Caenoidea, Durlophlebia, Epeoromimidae, Euplectoptera, Heptagenioidea, Mesephemeridae, Palingeniidae, Palingeniopsidae, Sharephemeridae, Sinoephemera, Doteridae, Phthartus, Dyadentomum, Thnetus, Aphelophlebodidae
Subtaxa: Australiphemeridae, Palaeoanthidae, Torephemeridae
Ecology: