| Aeschnidiidae Needham, 1903 | Small darner | 2 | Species | Taxom |
| Aeshnidae Rambur, 1842 | Darners | 110 | Species | Taxom |
| Amphipterygidae Selys, 1853 | | 3 | Species | Taxom |
| Araripechlorogomphidae Bechly & Ueda, 2002 | | 1 | Species | Taxom |
| Araripelibellulidae Bechly, 1996 | | 3 | Species | Taxom |
| Araripephlebiidae Bechly, 1998 | | 1 | Species | Taxom |
| Austropetaliidae Carle & Louton, 1994 | Redspot Dragonflies | 1 | Species | Taxom |
| Baetidae Leach, 1815 | Mayflies | 149 | Species | Taxom |
| Baetiscidae Banks, 1900 | Armored Mayflies | 1 | Species | Taxom |
| Caenidae Newman, 1853 | Small square-gill mayflies | 27 | Species | Taxom |
| Calopterygidae Selys, 1850 | Broad-winged damselflies | 74 | Species | Taxom |
| Chlorocyphidae Cowley, 1937 | Jewel damselfly | 1 | Species | Taxom |
| Coenagrionidae Kirby, 1890 | Narrow-winged damselflies | 369 | Species | Taxom |
| Cordulegastridae Calvert, 1893 | Biddie | 1 | Species | Taxom |
| Corduliidae Selys-Longch..., 1850 | Baskettails | 18 | Species | Taxom |
| Cratopetaliidae Bechly, 2010 | | 1 | Species | Taxom |
| Cretapetaluridae Bechly, 1996 | | 3 | Species | Taxom |
| Dicteriadidae Selys, 1853 | Barelegs | 2 | Species | Taxom |
| Ephemerellidae (Klapálek, 1909) | Blue-Winged Olive Ephemerellidae | 1 | Species | Taxom |
| Ephemeridae Leach, 1817 | Burrowing mayflies | 5 | Species | Taxom |
| Euphaeidae Jacobson & B..., 1905 | Gossamerwings | 1 | Species | Taxom |
| Euthyplociidae Lestage, 1921 | | 6 | Species | Taxom |
| Gomphaeschnidae Tillyard & F..., 1940 | | 8 | Species | Taxom |
| Gomphidae Rambur, 1842 | Club-tailed dragonflies | 155 | Species | Taxom |
| Hageniidae Tillyard & F..., 1940 | | 1 | Species | Taxom |
| Hemiphlebiidae Fraser, 1960 | Ancient greenling | 2 | Species | Taxom |
| Heptageniidae Needham, 1901 | Flat-Bodied Up-Wings Heptageniidae | 2 | Species | Taxom |
| Hexagenitidae Lameere, 1917 | | 3 | Species | Taxom |
| Isostictidae Fraser, 1955 | Narrow-wings | 1 | Species | Taxom |
| Leptohyphidae Landa & Soldán, 1985 | Little Stout Crawler Mayflies | 78 | Species | Taxom |
| Leptophlebiidae Banks, 1900 | Leptophlebiids | 142 | Species | Taxom |
| Lestidae Calvert, 1901 | Spread-winged damselflies | 29 | Species | Taxom |
| Libellulidae Rambur, 1842 | Chasers | 344 | Species | Taxom |
| Liupanshaniidae Bechly & al, 2001 | | 2 | Species | Taxom |
| Magnathemidae Bechly, 2010 | | 1 | Species | Taxom |
| Megaphlebiidae Bechly, 2010 | | 1 | Species | Taxom |
| Megapodagrionidae Tillyard, 1917 | Flatwing | 106 | Species | Taxom |
| Mesuropetalidae Bechly, 1996 | | 1 | Species | Taxom |
| Neopetaliidae Tillyard & F..., 1940 | | 1 | Species | Taxom |
| Nothomacromiidae (Carle, 1995) | | 1 | Species | Taxom |
| Oligoneuriidae Ulmer, 1914 | Brushleg Mayflies | 22 | Species | Taxom |
| Perilestidae Tillyard & F..., 1938 | Shortwings | 12 | Species | Taxom |
| Permaeschnidae Martynov, 1931 | | 1 | Species | Taxom |
| Petaluridae Needham, 1903 | Grayback dragonfly | 1 | Species | Taxom |
| Platycnemididae Tillyard, 1917 | White-legged damselflies | 3 | Species | Taxom |
| Platystictidae Laidlaw, 1924 | Forest Damselflies | 21 | Species | Taxom |
| Polymitarcyidae Banks, 1900 | Pale Burrower Mayflies | 65 | Species | Taxom |
| Polythoridae Munz, 1919 | Bannerwings | 50 | Species | Taxom |
| Pothamantidae MeCafferty, 1990 | | 1 | Species | Taxom |
| Proterogomphidae Bechly, 1996 | | 10 | Species | Taxom |
| Protoneuridae Tillyard, 1917 | Bambootails | 39 | Species | Taxom |
| Pseudostigmatidae Tillyard, 1917 | Forest giants | 17 | Species | Taxom |
| Siphlaenigmatidae Penniket, 1962 | | 3 | Species | Taxom |
| Siphlonuridae Banks, 1900 | Primitive Minnow Mayflies | 1 | Species | Taxom |
| Stenophlebiidae Needham, 1903 | | 1 | Species | Taxom |
| Synlestidae Tillyard, 1917 | Malachite | 0 | Species | Taxom |
| Thaumatoneuridae Fraser, 1957 | | 4 | Species | Taxom |
| Tricorythidae Lestage, 1942 | Little stout crawler mayflies | 1 | Species | Taxom |
