Meganeura (giant dragonfly; order Odonata, suborder Meganisoptera, family Meganeuridae) Genus of gigantic fossil dragonfly-like insects, from the Upper Carboniferous. They were probably the largest insects ever to have lived. M. gracilipes had a wing-span of 70 cm, and M. monyi a wing-span of 60–70 cm.
Meganeura See MEGANISOPTERA.
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