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Geoscience Frontiers 2018年第6期9卷 1745-1754页

作者： Lida Xing Martin G.Lockley Hendrik Klein Rong Zeng Sifu Cai Xiuchun Luo Chen Li State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China School of the Earth Sciences and Resources China University of GeosciencesBeijing 100083China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China Dinosaur Tracks Museum University of Colorado DenverPO Box 173364DenverCO 80217USA Saurierwelt Palantologisches Museum Alte Richt 7D-92318 NeumarktGermany Guizhou Provincial Museum Guiyang 550001China

A newly discovered Jiaguan Formation(Lower Cretaceous) tracksite from the Linjiang region of Guizhou Province, China, reveals the first example of a Cretaceous track morphotype attributable to the non-avian theropod ichnogenus Gigandipus, here named Gigandipus chiappei ichnosp nov. The theropod dominated locality also reveals the second report of the avian theropod ichnogenus Wupus, one of the largest avian traces currently known from the Lower Cretaceous. The Linjiang site provides evidence to support previous interpretations of a distinctive Lower Cretaceous theropod-dominated ichnofauna that was widespread in China and East Asia and highlights the similarity between Lower Cretaceous theropod ichnotaxa in East Asia and those found in the Lower Jurassic both in East Asia and elsewhere. These similarities in turn create various ichnotaxonomic challenges familiar to researchers working on theropod tracks, and we recommend caution in the naming of new theropod ichnotaxa at the ichnogenus level.

关键词： Early Cretaceous Jiaguan formation theropod tracks Gigandipus Wupus

Late Triassic sauropodomorph and Middle Jurassic theropod tracks from the Xichang Basin,Sichuan Province,southwestern China:First report of the ichnogenus Carmelopodus

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Journal of Palaeogeography 2018年第1期7卷 1-13页

作者： Li-Da Xing Jin Ba Martin G.Lockley Hendrik Klein 5heng-Wu Yon Anthony Romilio Chun-Yong Chou Vtl.Scott Persons IV State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of SciencesNanjing 210008Jiangsu ProvinceChina Sichuan Institute of Geological Survey Chengdu 610081Sichuan ProvinceChina Dinosaur Trackers Research Group University of Colorado DenverPO Box 173364DenverCO 80217USA Saurierwelt Palaontologisches Museum AlteRicht 7D-92318NeumarktGermany School of Biological Sciences The University of QueenslandBrisbaneQueensland 4072Australia Department of Biological Sciences University of Alberta116St &85AveEdmonton AB T6G 2R3Alberta Canada

Upper Triassic and Middle Jurassic strata of the Xichang Basin in Sichuan Province, southwestern China, yielded important dinosaur ichnofossils. From the Xujiahe Formation of the Yiguojiao tracksite, we report a Late Triassic footprint assemblage in China and the first discovery of diagnostic Triassic sauropodomorph tracks in this region. The tracks share a number of features in common with the ichnogenera Eosauropus(Late Triassic) and Liujianpus(Early Jurassic). The neighboring Bingtu tracksite is stratigraphically younger(Shaximiao Formation, Middle Jurassic) and preserves small tridactyl theropod tracks that represent the first occurrence of the ichnotaxon Carmelopodus in China and Asia. While these tracks are morphologically comparable to those from the Middle Jurassic type locality in North America, the specimens from China show the proximal margin of the digit IV impression in a more cranial position, which may indicate a trackmaker with a relatively short metatarsal IV. In addition to the skeletal record, the Carmelopodus footprints document the presence of small theropods in the dinosaur fauna of the Middle Jurassic Shaximiao Formation.

关键词： Sauropodomorph theropod Footprint Ichnofossil Upper Triassic Xujiahe Formation Middle Jurassic Shaximiao Formation Xichang Basin Sichuan Province

<i>Vitakrisaurus saraiki</i>theropod from South Asia

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Open Journal of Geology 2019年第10期9卷 643-645页

作者： Muhammad Sadiq Malkani Geological Survey of Pakistan Muzaffarabad Azad Kashmir Pakistan

Vitakrisaurus saraiki abelisauroid theropod dinosaurs reported from Pakistan and extended distribution into India. Vitakrisaurus saraiki is medium to large sized theropod which is represented by associated vertebral and limb elements and especially hand elements. Out of 14 small to large bodied theropods from Indo-Pakistan subcontinent, only less than half of these are restricted to some common elements. Vitakrisaurus saraiki theropod of Pakistan is based on associated vertebral and limb elements especially hand including articulated carpals, metacarpals, phalanges and claws which are significant for Gondwanan paleobiogeographic link, comparisons and systematic.

关键词： theropod Maastrichtian Vitakri Lameta Formation Pakistan

The new ichnotaxon Eubrontes nobitai ichnosp. nov. and other saurischian tracks from the Lower Cretaceous of Sichuan Province and a review of Chinese Eubrontes-type tracks

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Journal of Palaeogeography 2021年第3期10卷 302-320页

作者： Li-Da Xing Martin G.Lockley Hendrik Klein Li-Jun Zhang Anthony Romilio W.Scott Persons IV Guang-Zhao Peng Yong Ye Miao-Yan Wang State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China School of the Earth Sciences and Resources China University of GeosciencesBeijing 100083China Dinosaur Trackers Research Group University of ColoradoDenver 80217USA Saurierwelt Paläontologisches Museum Alte Richt 7 D-92318 NeumarktGermany Institute of Resources and Environment Key Laboratory of Biogenic Traces and Sedimentary Minerals of Henan ProvinceCollaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic RegionHenan Polytechnic UniversityJiaozuo 454003Henan ProvinceChina School of Biological Sciences The University of QueenslandBrisbaneQueensland 4072Australia Mace Brown Museum of Natural History Department of Geology and Environmental GeosciencesCollege of CharlestonCharleston 29401USA Zigong Dinosaur Museum Zigong 643013Sichuan ProvinceChina

The Jiaguan Formation and the underlying Feitianshan Formation(Lower Cretaceous) in Sichuan Province yield multiple saurischian(theropod–sauropod) dominated ichnofaunas. To date, a moderate diversity of six theropod ichnogenera has been reported, but none of these have been identified at the ichnospecies level. Thus, many morphotypes have common "generic" labels such as Grallator, Eubrontes, cf. Eubrontes or even "EubrontesMegalosauripus" morphotype. These morphotypes are generally more typical of the Jurassic, whereas other more distinctive theropod tracks(Minisauripus and Velociraptorichnus) are restricted to the Cretaceous. The new ichnospecies Eubrontes nobitai ichnosp nov. is distinguished from Jurassic morphotypes based on a very wellpreserved trackway and represents the first-named Eubrontes ichnospecies from the Cretaceous of Asia.

关键词： Ichnofossils Dinosaur footprints theropod Myths

The Middle-Upper Jurassic dinosaur-pterosaur fauna in Shandong Province,China:Evidence from ichnology

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Journal of Palaeogeography 2023年第3期12卷 419-433页

作者： Li-Da Xing Martin G.Lockley Bo-Lin Tong Hendrik Klein Chang Liu W.Scott Persons IV State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing100083China School of the Earth Sciences and Resources China University of GeosciencesBeijing100083China Dinosaur Trackers Research Group University of Colorado DenverPO Box 173364DenverCO80217USA Saurierwelt Palaontologisches Museum Alte Richt 7D-92318NeumarktGermany Mace Brown Museum of Natural History Department of Geology and Environmental GeosciencesCollege of CharlestonCharlestonSCUSA

Tracks previously examined between 2002 and 2015 from an incompletely-studied,and now partially lost tracksite site in the Santai Formation of Shandong Province were restudied based on new ex-cavations of additional *** contrast to the previous reports of tridactyl tracks,including Grallator,the present study discovered an additional assemblage of unequivocal pterosaur tracks(Pteraichnus)and a possible didactyl deinonychosaurian *** age of the Santai Formation is controversial but it is probably Late Jurassic,which corresponds to the epoch when pterosaur tracks appear *** interpretations,based on palynology and isotopic data,tentatively suggests an earlier Middle-Late Jurassic age and might suggest that the pterosaurian tracks are as old or somewhat older than any previously reported.

关键词： Santai Formation theropod Deinonychosaur Pterosaur

Origin of postcranial skeletal pneumaticity in dinosaurs

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Integrative Zoology 2006年第2期1卷 80-85页

作者： Mathew J.WEDEL University of California Museum of Paleontology BerkeleyCaliforniaUSA

The sauropodomorph Thecodontosaurus caducus and theropod Coelophysis bauri are the earliest known dinosaurs with postcranial skeletal *** both taxa,postcranial pneumatic features are confined to the cervical *** distribution of pneumaticity in the skeleton is most consistent with pneumatization by diverticula of cervical air sacs similar to those of *** hypotheses,including pneumatization by diverticula of the lungs,larynx and trachea,or cranial air spaces,are less well-supported.

关键词： dinosaur pneumaticity sauropodomorph theropod Triassic