Insecta - Dicondylia

Alternative spelling: Protogygoptera

Full reference: R. J. Tillyard. 1925. Kansas Permian Insects, Part 5: The Orders Protodonata and Odonata. American Journal of Science, Series 5 10(55):41-73

Parent taxon: Stigmoptera according to G. Bechly 2007

See also Carpenter 1933, Carpenter 1947, Fujiyama 1991, Martynov 1930, Martynov 1932, Martynov 1937 and Riek 1976

Sister taxa: Archizygoptera, Lobodonata

Subtaxa: Archizygopteroidea Jacquesoudardia Permagrionomorpha

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Ecology:

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