Abstract: A nearly complete skeleton of a choristodere is described and Ikechosaurus pijiagouensis sp. nov. is erected on the basis of this specimen. This new species is distinguished from other species of the genus Ikechosaurus by the following features : the jugal extends anteriorly to about the middle of the lacrymal ; the interorbital bar is narrower than the diameter of the orbit ; the postorbital separated from the postfrontal ; the anterior process of the iliac blade is less pronounced ; there is no distinct neck region between the acetabulum and iliac blade ; the ratio of epipodials to the propodials are relatively small. The morphology of this specimen reveals that certain characters like the fusion of the postfrontal and postorbital and the lack of a prominent postorbital process of the jugal cannot be used to diagnose the Simoedosaridae and Champsosauridae. Comparison with other choristoderes suggests that Ikechosaurus is more closely re2 lated to Tchoiria than with Champsosaurus and Simoedosaurus.