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A dragonfly is an insect belonging to the order Odonata, suborder Anisoptera (from Greek Î±Î½Î¹ÏÎ¿Ï anisos uneven + ÏÏÎµÏÎ¿Ï pteros, wings, because the hindwing is broader than the forewing).ossils of very large dragonfly ancestors in the Protodonata are found from 325 million years ago (Mya) in Upper Carboniferous rocks; these had wingspans up to about 750 mm (30 in).
Four wings are better. The dragonfly is the aerial stunt of the insect world. Dragonflies were amongst the first insects to fly, about 300 Ma ago. 290 Ma ago, the dragonflies had a wingspan of 68 cm (2.3 ft).