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Large theropod and small sauropod trackmakers from the Lower Cretaceous Jingchuan Formation, Inner Mongolia, China
Lockley, Martin G.1; Li, Jianjun2; Xing, Lida3,4,5; Guo, Bin6; Matsukawa, Masaki7
2018-12-01
Source PublicationCRETACEOUS RESEARCH
ISSN0195-6671
Volume92Pages:150-167
Abstract

At least 16 tetrapod tracksites have been reported from the Cretaceous Jingchuan Formation of the Ordos Basin, in the Chabu area, of Otog Qi, Inner Mongolia. Only a few of these sites, designated as Chabu sites 1-16, have been documented in detail. Most known sites occur in an area of similar to 100 km(2) and are saurischian dominated, yielding the tracks of sauropods, avian and non-avian theropods. Sites include the type localities of three previously-named theropod ichnotaxa: the non-avian theropod ichnogenus Chapus, (site 8) the avian theropod ichnogenus Tatarornipes (site 4) and the non-avian theropod ichnospecies Asianopodus robustus (site 6). We herein revise the description of ichnogenus Chapus based on the tridactyl holotype, erect the new ichnotaxon Ordexallopus zhanghfui ichnogen. et ichnosp. nov, for a distinctive tetradactyl morphotype, also from site 8, and compare both with A. robustus, and other well known large theropod track ichnotaxa from the Lower Cretaceous. Ordexallopus is shown to represent a large robust tetradactyl track maker with foot morphology reminiscent of that registered by the smaller, more gracile tetradactyl maker of Saurexallopus tracks. Both likely represent arctometatarsalians. Previous studies, have shown that many of the of the 16 known sites warrant detailed study, due to the abundance and ichnotaxonomic significance of tracks. We herein show that site 8, which has been developed as an interpretative destination, comprises four different sites (8A-8D), only one of which has previously been described in detail, in Chinese. Site 8D is of special significance as the type locality of Ordexallopus zhanglifui ichnogen et isp. nov. It also reveals evidence of gregarious behavior among juvenile sauropods traveling in the same direction as a large adult. The site also yields the most complete turtle trackway known from the Cretaceous of China. Ongoing studies of the Chabu area tracksites which form part of Otog Geopark indicate that the ichnological potential of the region is as yet only partially realized. (C) 2018 Elsevier Ltd. All rights reserved.

KeywordOrdos Basin Otog Geopark Tracksite Protection
DOI10.1016/j.cretres.2018.07.007
Language英语
WOS KeywordDominated Footprint Assemblages ; Shandong Province ; Turtle Tracks ; Ordos Basin ; Dinosaur ; Ichnotaxon ; County ; Korea ; Area ; Park
Funding ProjectBeijing Museum of Natural History ; offices of the University of Colorado Denver, Dinosaur Trackers Research Group
WOS Research AreaGeology ; Paleontology
WOS SubjectGeology ; Paleontology
WOS IDWOS:000454465400013
Funding OrganizationBeijing Museum of Natural History ; offices of the University of Colorado Denver, Dinosaur Trackers Research Group
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/16121
Collection中国科学院南京地质古生物研究所
Corresponding AuthorLockley, Martin G.
Affiliation1.Univ Colorado, Dinosaur Tracks Museum, CB 172,POB 173364, Denver, CO 80217 USA
2.Beijing Museum Nat Hist, 126 Tian Qiao,South St, Beijing 100050, Peoples R China
3.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China
4.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
5.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Jiangsu, Peoples R China
6.Inner Mongolia Museum Nat Hist, Xing An South Rd, Hohhot, Inner Mongolia, Peoples R China
7.Tokyo Gakugei Univ, Dept Environm Sci, Tokyo 1848501, Japan
Recommended Citation
GB/T 7714
Lockley, Martin G.,Li, Jianjun,Xing, Lida,et al. Large theropod and small sauropod trackmakers from the Lower Cretaceous Jingchuan Formation, Inner Mongolia, China[J]. CRETACEOUS RESEARCH,2018,92:150-167.
APA Lockley, Martin G.,Li, Jianjun,Xing, Lida,Guo, Bin,&Matsukawa, Masaki.(2018).Large theropod and small sauropod trackmakers from the Lower Cretaceous Jingchuan Formation, Inner Mongolia, China.CRETACEOUS RESEARCH,92,150-167.
MLA Lockley, Martin G.,et al."Large theropod and small sauropod trackmakers from the Lower Cretaceous Jingchuan Formation, Inner Mongolia, China".CRETACEOUS RESEARCH 92(2018):150-167.
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