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The Early Cretaceous dragonfly Hemeroscopus baissicus Pritykina is reported for the first time from the Jiuquan Basin, Gansu Province, Northwest China based on adult wings. These wings are different from those from other localities in two aspects: the oblique crossvein ‘O’ is 3 or 4 cells distal of the subnodus; the wing size is much smaller (30–42 mm in length for forewings). These differences are...
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