Large-Sized Ankylosaur(Dinosauria) from the Lower Cretaceous Jiufotang Formation of Western Liaoning,China

摘要

Two incomplete bones referred to ankylosaur scapulocoracoid and humerus are described,which were discovered from the Early Cretaceous Jiufotang Formation of Dachengzi Town,Kazuo County,Liaoning Province.Ankylosaur dinosaurs have ever been found in the Lower Cretaceous Yixian,Fuxin and Sunjiawan Formations of western Liaoning.The occurrence of ankylosaurs within Jiufotang Formation improves our knowledge on the ankylosaur stratigraphic distribution.Based on the length of scapulocoracoid,the new dinosaur is estimated to exceed 6.0 meters long,representing the largest ankylosaur in western Liaoning.