Meganeuropsis, from Ancient Greek μέγας (mégas), meaning "large", νεῦρον (neûron), meaning "nerve", and ὄψις (ópsis), meaning "appearance", is an extinct genus of griffenfly, order Meganisoptera, known from the Early Permian Wellington Formation of North America, and represents the largest known insect of all time. Meganeuropsis existed during the Artinskian age of the Permian period, 290.1–283.5 mya. The genus includes two described species by Frank Morton Carpenter, fossil insect curator at the Museum of Comparative Zoology at Harvard University:
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).