Abstract
We describe a number of newly discovered dinosaur tracks from the Late Jurassic-Early Cretaceous Tuchengzi Formation, located inthe core zone of Yanqing Silicified Wood National Geopark, during field work for the preparation of global geopark application inYanqing County, Beijing. The preliminary research indicates that these may comprise thyreophoran (cf. Deltapodus isp.), theropod,ornithopod and probably sauropod tracks. The thyreophoran tracks indicate the presence of this family during the Late Jurassic in theJibei-Liaoxi area. This may be related to the presence of ankylosaurids from the Lower Cretaceous Yixian Formation, in Chaoyang,Liaoning. As they are rare, high-speed theropod tracks reveal aspects of their paleoethology. The dinosaur tracks from Yanqingconstitute the first evidence of dinosaurs in Beijing. These also enrich the knowledge on the diversity of dinosaur species in theTuchengzi Formation, which provides an excellent evolutionary sample to compare with that of the later Jehol Fauna.
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