| A New Genus of Psittacosauridae (Dinosauria: Ornithopoda) and the Origin and Early Evolution of Marginocephalian Dinosaurs |
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| 作者姓名： | YOU Hailu Institute of Geology Chinese Academy of Geological Sciences Beijing XU Xing and WANG XiaolinInstitute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing |
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| 作者单位： | YOU Hailu Institute of Geology，Chinese Academy of Geological Sciences，Beijing 100037XU Xing and WANG XiaolinInstitute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences，Beijing 100044 |
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| 摘 要： | An almost complete juvenile dinosaur skull with lower jaw was discovered from the Early Cretaceous Yixian Formation in Beipiao, Liaoning Province, China. Here, the specimen is described and a cladistic analysis is performed in order to find its phylogenetic relationships. The result shows that this specimen represents a new genus of Psittacosauridae, Hongshanosaurus houi, gen. et sp. nov., and confirms the monophyletic status for Ceratopsia and Marginocephalia. However, Heterodontosaurus is found to be the sister taxon to Marginocephalia, rather than a basal Omithopoda.
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A New Genus of Psittacosauridae (Dinosauria: Ornithopoda) and the Origin and Early Evolution of Marginocephalian Dinosaurs |
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| Authors: | YOU Hailu Institute of Geology Chinese Academy of Geological Sciences Beijing XU Xing and WANG XiaolinInstitute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing |
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| Institution: | Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037 Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences, Beijing 100044 Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences, Beijing 100044 |
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| Abstract: | An almost complete juvenile dinosaur skull with lower jaw was discovered from the Early Cretaceous Yixian Formation in Beipiao, Liaoning Province, China. Here, the specimen is described and a cladistic analysis is performed in order to find its phylogenetic relationships. The result shows that this specimen represents a new genus of Psittacosauridae, Hongshanosaurus houi, gen. et sp. nov., and confirms the monophyletic status for Ceratopsia and Marginocephalia. However, Heterodontosaurus is found to be the sister taxon to Marginocephalia, rather than a basal Omithopoda. |
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| Keywords: | Dinosauria Marginocephalia Hongshanosaurus houi gen et sp nov Yixian Formation Liaoning Province |
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