Claim: Rapaxavis(Morschhauser et al., 2009) derived from the Latin rapax, "grasping", with avis, "bird", a genus of extinct bird of the Longipterygidae family within the Phylum, Chordata that has been  found in the Jiufotang Formation in Liaoning, People's Republic of China.
Evidence: In 2009 this specimen was named and described as the type species Rapaxavis pani by Eric M. Morschhauser, David Varricchio, Gao Chunling, Liu Jinyuan, Wang Xuri, Cheng Xiadong and Meng Qingjin. The generic name combines the Latin rapax, "grasping", with avis, "bird", in reference to the special grasping function of the foot. It has been found in the Jiufotang Formation in Liaoning, People's Republic of China. Enantiornithes is a group of extinct avialans ("birds" in the broad sense), the most abundant and diverse group known from the Mesozoic era. Rapaxavis a genus of enantiornithine bird. Family: †Longipterygidae Phylum: Chordata