Hexapods - insects see Epiclass Hexapoda Latreille, 1825
   Class Insecta Linnaeus, 1758 - insects
     Subclass Dicondylia Haeckel, 1866
       Infraclass Pterygota Lang, 1888
         Division Ephemeroptera Hyatt & Arms, 1890
           Order Ephemeroptera Hyatt & Arms, 1891 - mayflies
             Suborder Pisciforma
               Superfamily Siphlonuroidea Ulmer, 1920
                 Family Baetidae Leach, 1815
                   01 Genus Acentrella Bengtsson, 1912
                   02 Genus Acerpenna Waltz & McCafferty, 1987
                   03 Genus Apobaetis Day, 1955
                   04 Genus Baetis Leach, 1815
                   05 Genus Baetodes Needham & Murphy, 1924
                   06 Genus Barbaetis Waltz & McCafferty, 1985
                   07 Genus Callibaetis Eaton, 1881
                   08 Genus Camelobaetidius Demoulin, 1966
                   09 Genus Centroptilum Eaton, 1869
                   10 Genus Cloeodes Traver, 1938
                   11 Genus Cloeon Leach, 1815
                   12 Genus Diphetor Waltz & McCafferty, 1987
                   13 Genus Fallceon Waltz & McCafferty, 1987
                   14 Genus Heterocloeon McDunnough, 1925
                   15 Genus Labiobaetis Novikova & Kluge, 1987
                   16 Genus Paracloeodes Day, 1955
                   17 Genus Procloeon Bengtsson, 1915
                   18 Genus Pseudocentroptiloides Jacob, in Jacob & Glazaczow, 1986