| New Material of Pterosaur Sinopterus （Reptilia： Pterosauria） from the Early Cretaceous Jiufotang Formation, Western Liaoning, China |
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| 引用本文： | Lü Junchang,LIU Jinyuan,WANG Xuri,GAO Chunling,MENG Qingjin and JI Qiang Institute of Geology,Chinese Academy of Geological Sciences,Beijing Dalian Natural History Museum,Dalian,Liaoning.New Material of Pterosaur Sinopterus （Reptilia： Pterosauria） from the Early Cretaceous Jiufotang Formation, Western Liaoning, China[J].Acta Geologica Sinica,2006,80(6):783-789. |
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| 作者姓名： | Lü Junchang LIU Jinyuan WANG Xuri GAO Chunling 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： | Lü Junchang1，*，LIU Jinyuan2，WANG Xuri2，GAO Chunling2，MENG Qingjin2 and JI Qiang1 1 Institute of Geology，Chinese Academy of Geological Sciences，Beijing 100037 2 Dalian Natural History Museum，Dalian，Liaoning 116023 |
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| 基金项目： | 国家高技术研究发展计划(863计划) 国家重点基础研究发展规划(973计划);中国地质调查局资助项目 |
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| 摘 要： | 1 Introduction The Jiufotang Formation is one of the most fossil- productive Early Cretaceous deposits of China. It overlies the famous Yixian Formation from which many important taxa were found (Ji et al., 2004; Chang et al., 2003; Zhou et al., 2003). In addition to other vertebrates, pterosaurs, the first flying reptiles in Earth history, are also abundant in the Jiufotang Formation. At present, nine species belonging to five genera have been reported from the Jiufotang Formation. The…
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| 关 键 词： | 辽宁 翼龙 爬行动物 白垩纪 |
| 收稿时间： | 4/6/2006 12:00:00 AM |
| 修稿时间： | 2006-08-16 |
New Material of Pterosaur Sinopterus (Reptilia:Pterosauria) from the Early Cretaceous Jiufotang Formation,Western Liaoning,China |
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| Authors: | L Junchang LIU Jinyuan WANG Xuri GAO Chunling MENG Qingjin JI Qiang |
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| Institution: | L(U) Junchang,LIU Jinyuan,WANG Xuri,GAO Chunling,MENG Qingjin,JI Qiang |
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| Abstract: | Based on a new nearly complete postcranial skeleton of an adult specimen of Sinopterus from the Early Cretaceous Jiufotang Formation of western Liaoning, China, the diagnosis of Sinopterus is amended. The revised diagnosis of Sinopterus includes skull relatively elongate with weakly developed cranial crest; ratio of the length of Ph2d4 to that of Ph1d4 is approximately 0.73; ratio of the length of wing metacarpal to that of metatarsal 3 is 4.5; ratio of the length of mt3 to that of tibia is approximately 0.21, and wing phalanges 1 and 2 are straight. Comparison between the ratios of the limb bones between non-adult and adult individuals of Sinopterus indicates that during the ontogenetic process, some ratios between bones are constant, such as the first wing phalanx to the second wing phalanx, the wing metacarpal to the metatarsal 3, metatarsal 3 to the tibia, but others are not, such as humerus to wing metacarpal and femur to tibia, in which the former grows faster than the latter. |
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| Keywords: | Sinopterus amended diagnosis ontogeny Jiufotang Formation Early Cretaceous western Liaoning China |
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