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A new genus and species of Odonatoptera is described and figured from the Amisan Formation as  Koreaphlebia iussradiae  gen. et sp. nov. This new genus and species is placed in the Zygophlebiidae and differs from all other zygophlebid,  inter alia , owing to the forewing with a distinct bridge IR2-RP2-IR1 perfectly straight, crossvein between MP and Cu+AA below apex of MAb vertical and rather long, base of CuP separating from that of CuA opposite point of junction between MAa and MP, at the crossing point of ‘pillar’ and Cu+AA, and RP3/4 with at most short distal branches covering a small area. This new specimen is the first Zygophlebiidae from the Amisan Formation. The temporal range of the Triadophlebiomorpha is used to discuss the dating of the Amisan Formation. urn:lsid:zoobank.org:pub:80F2B019-DF37-4DCB-9D92-1EB825A11D58

Koreaphlebia gen. nov. (Odonatoptera: Triadophlebiomorpha): new evidence of a Triassic age for the Amisan Formation in Korea