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An Enigmatic New Genus of Biarmohymenid from the Early Permian Wellington Formation of Noble County, Oklahoma (Palaeodictyopterida: Diaphanopterodea)

A new genus and species of the extinct Paleozoic insect order Diaphanopterodea (Palaeodictyopterida) is described and figured from the Early Permian (Artinskian) Wellington Formation of Noble County, Oklahoma. Anomalohymen dochmus, new genus and species, is most similar to Biarmohymen bardense Zalessky from the Early Permian (Kungurian) of Tshekarda in Russia. The two genera share the proximal coalescence of M and CuA along with a generally reduced venation. Rather than erect another monogeneric family, we here include Anomalohymen in the Biarmohymenidae, emending the diagnosis of the family, providing a key to the constituent genera, and extending the biogeographic and temporal range of the lineage.