A new pterosaur (Pterodactyloidea, Tapejaridae) from the Early Cretaceous Jiufotang Formation of western Liaoning, China and its implications for biostratigraphy  

作　　者：WANG Xiaolin & ZHOU Zhonghe Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing 100044, China Correspondence should be addressed to Wang Xiaolin (e-mail: xlinwang @263.net) 

出　　处：《Chinese Science Bulletin》2003年第1期16-23,共8页

基　　金：We thank all colleagues of the Liaoxi Project of the IVPP for assistance in the field; Chang Meeman and Li Jinling for reading the manuscript; Li Yutong for preparing the specimen and Gao Wei for photos. We are particularly in debt to Dong Zhiming f

摘　　要：In this article we describe a new and excep-tionally well-preserved pterodactyloid pterosaur, Sinopterus dongi gen. et sp. nov. from the Jiufotang Formation in west-ern Liaoning Province of northeast China. The new species is referred to the family Tapejaridae, representing its first re-cord outside Brazil. It also represents the earliest occurrence as well as the most complete skeleton of the family. Some revisions are made about the family according to the mor-phological observations of the postcranial bones of Sinop-terus. Two pterosaur assemblages appear to have existed in the Jehol Group, represented by the lower Yixian Formation and upper Jiufotang Formation, respectively. The lower pterosaur assemblage shows some resemblance to that of the Late Jurassic in Solnhofen (Tithonian) by sharing members of the Pterodactylidae and Anurognathidae. The upper one shows more resemblance to that of the Early Cretaceous Santana Formation (Aptian/Albian) by comprising only pterodactyloids such as the Tapejaridae. The age of the Yixian Formation is younger than that of the Solnhofen lithographic limestone, and the age of the Jiufotang Forma-tion (Aptian) is slightly older than the Santana Formation.In this article we describe a new and excep-tionally well-preserved pterodactyloid pterosaur, Sinopterus dongi gen. et sp. nov. from the Jiufotang Formation in west-ern Liaoning Province of northeast China. The new species is referred to the family Tapejaridae, representing its first re-cord outside Brazil. It also represents the earliest occurrence as well as the most complete skeleton of the family. Some revisions are made about the family according to the mor-phological observations of the postcranial bones of Sinop-terus. Two pterosaur assemblages appear to have existed in the Jehol Group, represented by the lower Yixian Formation and upper Jiufotang Formation, respectively. The lower pterosaur assemblage shows some resemblance to that of the Late Jurassic in Solnhofen (Tithonian) by sharing members of the Pterodactylidae and Anurognathidae. The upper one shows more resemblance to that of the Early Cretaceous Santana Formation (Aptian/Albian) by comprising only pterodactyloids such as the Tapejaridae. The age of the Yixian Formation is younger than that of the Solnhofen lithographic limestone, and the age of the Jiufotang Forma-tion (Aptian) is slightly older than the Santana Formation.

关 键 词：辽西 朝阳 热河组 生物地层 白垩纪 翼龙 化石 

分 类 号：Q915[天文地球—古生物学与地层学]