OnChirostenotes, a Late Cretaceous oviraptorosaur (Dinosauria: Theropoda) from western North America

A previously unrecognized partial skeleton of Chirostenotes pergracilis Gilmore, 1924 from the Upper Cretaceous Horseshoe Canyon Formation of Alberta (Canada) includes parts of the skull, much of the pelvic girdle, and elements from all regions of the vertebral column. It provides much new information concerning the skeletal structure of this unusual theropod dinosaur. Close structural correspondence between the maxilla of this specimen and the...