Largest prehistoric insect

The largest prehistoric insect was the dragonfly Meganeura monyi, which lived about 280 million years ago. Fossil remains (i.e. impressions of wings) discovered at Commentry, France, indicate a wing expanse of up to 70 cm. (27.5 in). This compares to the largest dragonfly living today (Megaloprepus caeruleata) from Central and South America which has been measured up to 120 mm (4.72 in) in length with a wingspan of up to 191 mm (7.52 in).