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An Adult Specimen of Hongshanosaurus houi (Dinosauria: Psittacosauridae) from the Lower Cretaceous of Western Liaoning Province, China |
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| Authors: | YOU Hailu and XU Xing Institute of Geology Chinese Academy of Geological Sciences Beijing |
| Institution: | YOU Hailu and XU Xing Institute of Geology,Chinese Academy of Geological Sciences,Beijing,Institute of Vertebrate Paleontology and Paleoanthropology |
| Abstract: | A new specimen consisting of a complete skull and lower jaw was discovered from the Lujiatun bed of the Lower Cretaceous Yixian Formation in the Lujiatun site, Beipiao, western Liaoning Province. It represents an adult specimen of Hongshanosaurus houi. Comparative studies show that Hongshanosaurus is distinguishable from its sister taxon Psittacosaurus by having the preorbital portion about half of the basal skull length, and the elliptical external naris, orbit, and a lower temporal fenestra oriented caudodorsally. |
| Keywords: | Dinosauria Psittacosanridae Hongshanosaurus ontogeny Lower Cretaceous western Liaoning |
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