Unusual dinosaur trackway preservation as clues to paleo-landscape and behavior from the Lower Cretaceous Luohe Formation,Shaanxi Province,China  

作　　者：Lida Xing Martin G.Lockley Yongzhong Tang Hendrik Klein W.Scott Persons IV Miaoyan Wang Xingwen Li Hao Wu 

机构地区：[1]State Key Laboratory of Biogeology and Environmental Geology,China University of Geosciences,Beijing,China [2]School of the Earth Sciences and Resources,China University of Geosciences,Beijing,China [3]Dinosaur Trackers Research Group,University of Colorado Denver,PO Box 173364,Denver,CO 80217,USA [4]Shaanxi Institute of Geological Survey,Xi'an 710054,Shaanxi,China [5]Saurierwelt Paläontologisches Museum,Alte Richt 7,D–92318 Neumarkt,Germany [6]Mace Brown Museum of Natural History,Department of Geology and Environmental Geosciences,College of Charleston,Charleston 29401,USA

出　　处：《Geoscience Frontiers》2021年第2期737-745,共9页地学前缘（英文版）

基　　金：the National Natural Science Foundation of China(No.41888101,41790455,41772008);the 111 project(B20011)。

摘　　要：Poorly preserved tracks have limited ichnotaxonomic or biotaxon utility,but may reveal useful information about the paleoenvironment,behavior and track taphonomy.Eight mostly parallel to sub parallel trackway segments(T1–T8)were registered on a truncation surface in the Lower Cretaceous Luohe Formation of Shaanxi Province.These attest to the passage of several bipeds,probably all theropods,in a paleo-contour-parallel,south-north direction in an arid setting.Quality of preservation in these trackways is poor,but notably superior in two additional trackways(T9–T10)on a foreset surface.Trackway T9 indicates a didactyl trackmaker,probably a deinonychosaurian,heading north to south.This is the 13th report of deinonychosaurian tracks from the Lower Cretaceous of China.If any or all the eight south-north oriented trackway segments represent continuations of other segments in the same trackways,the total number of individual trackmakers heading in this direction may have been as lowas three.Although the trackway pattern and sedimentological evidence could indicate a physically controlled pathway influencing the direction taken by these trackmakers,the possibility that the trackways also represented small social or gregarious group cannot be ruled out.

关 键 词：Theropod tracks Ornithischian tracks Deinonychosaurian Dunes sediments 

分 类 号：P534.53[天文地球—古生物学与地层学] Q915[天文地球—地质学]