New Early Cretaceous Pterosaur-Bird Track Assemblage from Xinjiang, China:Palaeoethology and Palaeoenvironment  

作　　者：HE Qing XING Lida ZHANG Jianping Martin G.LOCKLEY Hendrik KLEIN W.Scott PERSONS IV QI Liqi JIA Chengkai 

机构地区：[1]School of the Earth Sciences and Resources, China University of Geosciences [2]Dinosaur Tracks Research Group, University of Colorado at Denver,PO Box 173364, Denver, CO 8217, USA [3]Saurierwelt Palontologisches Museum,Alte Richt 7, D-92318 Neumarkt, Germany [4]Department of Biological Sciences, University of Alberta, 11455 Saskatchewan Drive,Edmonton, Alberta T6G 2E9, Canada [5]Research Institute of Experiment and Detection,Xinjiang Oilfield Company

出　　处：《Acta Geologica Sinica(English Edition)》2013年第6期1477-1485,共9页地质学报（英文版）

基　　金：supported by Key Laboratory of Evolutionary Systematics of Vertebrates, CAS (2011LESV008);the Xinjiang Research Institute of Petroleum Exploration

摘　　要：A pterosaur-bird track assemblage from a sandstone-siltstone-mudstone sequence of the Lower Cretaceous Tugulu Group of Xinjiang comprises the first pterosaur track record from this province and the largest specimen thus far known from China.The pterosaur tracks are assigned to the ichnogenus Pteraichnus based on the triangular overall-shape,the four elongate digit traces and the robust manual digit trace Ⅲ.Supposed trackmakers were dsungaripterid pterodactyloids whose skeletal remains are well known from the Tugulu Group.The bird tracks that occur on the same surface,are those of typical shorebirds,known from different other localities in southeast Asia.The congruence with Koreanaornis dodsoni described from the same stratigraphic level justifies an assignment to this ichnospecies.This is a further evidence of the co-occurrence of pterosaurs and birds in a typical iakeshore environment with possible seasonal alteration of water supply and aerial exposure indicated by wave ripples,mudcracks and repeated cycles of coarse to fine sediment.Pterosaurs and birds frequented the shoreline and may have fed also on the numerous invertebrates such as the Scoyenia tracemaker that left abundant burrows.A pterosaur-bird track assemblage from a sandstone-siltstone-mudstone sequence of the Lower Cretaceous Tugulu Group of Xinjiang comprises the first pterosaur track record from this province and the largest specimen thus far known from China.The pterosaur tracks are assigned to the ichnogenus Pteraichnus based on the triangular overall-shape,the four elongate digit traces and the robust manual digit trace Ⅲ.Supposed trackmakers were dsungaripterid pterodactyloids whose skeletal remains are well known from the Tugulu Group.The bird tracks that occur on the same surface,are those of typical shorebirds,known from different other localities in southeast Asia.The congruence with Koreanaornis dodsoni described from the same stratigraphic level justifies an assignment to this ichnospecies.This is a further evidence of the co-occurrence of pterosaurs and birds in a typical iakeshore environment with possible seasonal alteration of water supply and aerial exposure indicated by wave ripples,mudcracks and repeated cycles of coarse to fine sediment.Pterosaurs and birds frequented the shoreline and may have fed also on the numerous invertebrates such as the Scoyenia tracemaker that left abundant burrows.

关 键 词：Pteraichnus Koreanaornis Early Cretaceous Tugulu Group XINJIANG 

分 类 号：Q915[天文地球—古生物学与地层学]