| On the Systematic Position of Eosipterus yangi Ji et Ji, 1997 among Pterodactyloids |
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| 作者姓名： | LU Junchang GAO Chunling MENG Qingjin LIU Jinyuan JI Qiang |
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| 作者单位： | [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： | 国家重点基础研究发展计划(973计划);中国地质调查局资助项目 |
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| 摘 要： | 1 Introduction Eosipterus yangi is the first pterosaur found from western Liaoning Province (Ji and Ji, 1997). Since then, more and more pterosaurs have been reported (Ji and Ji, 1998; Wang and Lü, 2001; Wang et al., 2002, 2005; Wang and Zhou, 2003, 2004; Lü, 2003; Ji et al., 2004; Lü and Ji, 2005a, b; Dong and Lü, 2005; Lü and Yuan, 2005; Lü and Zhang, 2005; Lü et al., 2006). Because Eosipterus yangi lacks skull, it is difficult to resolve its relationships to other pterodact…
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| 关 键 词： | 古动物 化石 跖骨 小瘤 辽宁 |
| 收稿时间： | 2006-07-20 |
| 修稿时间： | 2006-09-13 |
On the Systematic Position of Eosipterus yangi Ji et Ji, 1997 among Pterodactyloids |
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| Authors: | L Junchang GAO Chunling MENG Qingjin LIU Jinyuan JI Qiang |
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| Institution: | L(U) Junchang,GAO Chunling,MENG Qingjin,LIU Jinyuan,JI Qiang |
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| Abstract: | A comparison of the new specimen with the holotype of Eosipterus from western Liaoning Province indicates that Eosipterus is a valid genus, which belongs to the family Ctenochasmatidae. The revised diagnosis of Eosipterus includes the wing span is less than 1.25 meters, the length of the ulna is nearly equal to these of wing phalanx 2 and the tibia, humerus is longer than tibia, and the ratio of metatarsal to tibia is approximately 0.40. |
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| Keywords: | Eosipterus systematic position Yixian Formation western Liaoning |
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