On the Systematic Position of Eosipterus yangi Ji et Ji,1997 among Pterodactyloids

作     者：LU Junchang GAO Chunling MENG Qingjin LIU Jinyuan JI Qiang 

作者机构：Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 Dalian Natural History Museum Dalian Liaoning 116023 

出 版 物：《Acta Geologica Sinica(English Edition)》 (地质学报（英文版）)

年 卷 期：2006年第80卷第5期

页      面：643-646页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：国家重点基础研究发展计划(973计划)(2006CB701405) 中国地质调查局资助项目(200413000024) 

主　　题：Eosipterus systematic position Yixian Formation western Liaoning 

摘      要：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.