Claim: Rapaxavis(Morschhauser et al., 2009) derived from the Latin rapax, "grasping", with avis, "bird", a genus of  enantiornithine 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: Genus: †Rapaxavis
Morschhauser et al., 2009 Rapaxavis a genus of enantiornithine bird. 
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. 
Family: †Longipterygidae Phylum: Chordata