| regnum = Animalia | phylum = Arthropoda | subphylum = Hexapoda | classis = Insecta | subclassis = Pterygota | infraclassis = Palaeoptera (disputed) | superordo = Ephemeropteroidea | superordo_authority = Rohdendorf, 1968 | ordo = Ephemeroptera | ordo_authority = Hyatt & Arms, 1891 | subdivision_ranks = Suborders | subdivision = Suborder Schistonota Superfamily Baetoidea Siphlonuridae Baetidae Oniscigastridae Ameletopsidae Ametropodidae Superfamily Heptagenioidea Coloburiscidae Oligoneuriidae… (More on Ephemeroptera)