| New Material of Sinosauropteryx (Theropoda:Compsognathidae) from Western Liaoning,China |
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| 作者姓名： | JI Shu'an GAO Chunling LIU Jinyuan MENG Qingjin and JI Qiang Institute of Geology Chinese Academy of Geological Sciences Beijing Dalian Natural History Museum Dalian Liaoning |
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| 作者单位： | JI Shu'an，GAO Chunling，LIU Jinyuan，MENG Qingjin and JI Qiang Institute of Geology，Chinese Academy of Geological Sciences，Beijing 100037 Dalian Natural History Museum，Dalian，Liaoning 116023 |
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| 摘 要： | An incomplete specimen of Sinosauropteryx prima collected from the Early Cretaceous Yixian Formation of the Dawangzhangzi area in Lingyuan, western Liaoning is depicted. It represents the first systematically described material of this feathered compsognathid outside the Sihetun area in Beipiao. This specimen shows some diagnostic features of Sinosauropteryx prima, such as the very short forelimb in relation to hindlimb with the length ratio of humerus plus radius to femur plus tibia just around 30%, and the long and massive first manual ungual subequal in length to radius. The presence of Sinosauropteryx prima only at Sihetun and Dawangzhangzi supports the suggestion that the fossil-bearing beds in the Sihetun and Dawangzhangzi areas are equivalent to each other within the Yixian Formation.
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New Material of Sinosauropteryx (Theropoda:Compsognathidae) from Western Liaoning,China |
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| Authors: | JI Shu'an GAO Chunling LIU Jinyuan MENG Qingjin and JI Qiang Institute of Geology Chinese Academy of Geological Sciences Beijing Dalian Natural History Museum Dalian Liaoning |
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| Abstract: | An incomplete specimen of Sinosauropteryx prima collected from the Early Cretaceous Yixian Formation of the Dawangzhangzi area in Lingyuan, western Liaoning is depicted. It represents the first systematically described material of this feathered compsognathid outside the Sihetun area in Beipiao. This specimen shows some diagnostic features of Sinosauropteryx prima, such as the very short forelimb in relation to hindlimb with the length ratio of humerus plus radius to femur plus tibia just around 30%, and the long and massive first manual ungual subequal in length to radius. The presence of Sinosauropteryx prima only at Sihetun and Dawangzhangzi supports the suggestion that the fossil-bearing beds in the Sihetun and Dawangzhangzi areas are equivalent to each other within the Yixian Formation. |
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| Keywords: | Sinosauropteryx Lingyuan Liaoning Yixian Formation stratigraphic correlation Cretaceous |
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