Meganeuropsis americana

Meganeuropsis is an extinct genus of griffinfly, order Meganisoptera, known from the Early Permian of North America, and represents the biggest known insect of all time. Meganeuropsis permiana described in 1937 from Elmo, Kansas. It was one of the largest known insects that ever lived, with a reconstructed wing length of 330 millimetres, an estimated wingspan of up to 710 millimetres, and a body length from head to tail of almost 430 millimetres.

Along with Meganeura,‭ ‬Meganeuropsis was a griffinfly of the Paleozoic,‭ ‬and prooves that the giant griffinflies flew throughout the Permian period.‭ ‬The fossil of Meganeuropsis americana recovered from Oklahoma in‭ ‬1940,‭ ‬features the largest complete insect wing ever found.