The first author thanks Dr. Dale Winkler (SMU, USA) for his helpful and constructive comments on the earlier version of this paper. This research was supported by grants from the Basic Outlay of Scientific Research Work from the Ministry of Science and Technology (2011-SYS-02), and the Natural Science Foundation of China (90914003; 40872017).
A new Sordes-like pterosaur Jianchangopterus zhaoianus gen. et sp. nov. is erected based on a almost complete skeleton with skull preserved. It is characterized by the following characters: seven and six pairs of upper jaw and lower jaw teeth respectively; the development of a recess on maxilla; the evenness of the dental margin in lateral view; a distinct central ridge along dorsal surface of the mandibular symphysis; wing phalanx 4 with strongly curved shaft approximately 96% the length of the wing phalanx 1. The discovery of a Sordes-like pterosaur Jianchangopterus, and other taxa from the same formation indicates that pterosaurs reached great diversities during the Middle to Upper Jurassic period.