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The morphology of Chiappeavis magnapremaxillo(Pengornithidae: Enantiornithes) and a comparison of aerodynamic function in Early Cretaceous avian tail fans
Jingmai K. O’CONNOR  , ZHENG Xiao-Ting, HU Han, WANG Xiao-Li, ZHOU Zhong-He 
Vertebrata Palasiatica . 2017, (1): 41 -58 .