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| 1 | The Genome of Artemisia annua Provides Insight into the Evolution of Asteraceae Family and Artemisinin Biosynthesis显示文摘Artemisia annua,通常已知的同样香甜的苦恼或 Qinghao,是到中国的一个灌木土著人并且长被用于药用的目的。A。annua 现在作为有势力抗疟药混合物的唯一的生来的来源全球性被栽培, artemisinin。这里,我们报导 A 的 1.74-gigabase 染色体的一个高质量的草稿集会。annua,高度异质接合,富于重复定序,并且包含 63 ? 226 编码蛋白质的基因,在定序的植物种类之中的最大的数字之一。我们发现了那,作为在 Asteraceae 的一些定序的染色体之一, A。annua 染色体包含对这大被子植物 clade 特定的很多基因。尤其是,扩大和编码涉及萜烯生合成的酶的基因的功能的多样化与 artemisinin biosynthetic 小径的进化一致。我们进一步由介绍那 A 的 transcriptome 揭示了。annua 发展了复杂 transcriptional 规章的网络位于 \O 下面 artemisinin 生合成。把转基因的 A 基于我们产生了的全面 genomic 和 transcriptomic 分析。artemisinin 高级的生产的 annua 线,它现在为大规模生产准备好了并且将从而帮助遇见增加 artemisinin 的全球需求的挑战。 | Qian Shen Lida Zhang Zhihua Liao Shengyue Wang Tingxiang Yan Pu Shi Meng Liu Xueqing Fu Qifang Pan Yuliang Wang Zongyou Lv Xu Lu Fangyuan Zhang Weimin Jiang Yanan Ma Minghui Chen Xiaolong Hao Ling Li Yueli Tang Gang Lv Yan Zhou Xiaofen Sun Peter E. Brodelius Jocelyn K.C. Rose Kexuan Tang | 2018 | Molecular Plant2018，11，6： | 47 |
| 2 | A Review of the Tetrapod Track Record in China,with Special Reference to Type Ichnospecies:Implications for Ichnotaxonomy and Paleobiology显示文摘切开并且 lumping 是在脊椎动物的永久问题,特别恐龙, ichnotaxonomy。中国恐龙 ichnotaxonomy,在 1940 开始了,提供一系列有趣的案例研究,加亮历史、可疑的 ichnotaxonomy 的双问题。中国中生代四足动物的轨道类型被放进 63 ichnospecies (一个三叠纪, 28 侏罗记,和 34 白垩纪) ,从中国识别的其它,非类型 ichnospecies 或 ichnotaxa 独占。(83%) 52 这 63 四足动物的 ichnospecies 被放在 monospecific ichnogenera。在 ichnogenus 水平,我们由认出 nomina dubia 或由从 53 恐龙的 ichnogenera (32% 减小) 的表的 synonymy17 的 pruneeither,离开我们认为有效的 36 ichnotaxa。大多数切割影响侏罗记 theropod ichnotaxa,它仅仅从 23 被归结为九因为大多数 ichnogenera 是 Grallator 和 Eubrontes 的主观年轻同义词。更少中国白垩纪 ichnotaxa (仅仅 21 ichnogenera 中的六个) 是明显的 nomina dubia 或主观同义词,建议更大的东方亚洲人 endemism 在期间这次。因为 ichnospecies 差别是微妙的,我们暂时地作为同种的 ichnospecies 的有效未解决的详细比较分析保留 ichnospecies。这合成是长迟到的并且对历史、省的 ichnotaxonomy 的地址问题必要,它严重地在空间和时间妨碍四足动物的 ichnofaunas 的比较。 | Martin G.LOCKLEY LI Jianjun LI Rihui Masaki MATSUKAWA Jerald D.HARRIS XING Lida | 2013 | Acta Geologica Sinica(English Edition)2013，87，1： | 19 |
| 3 | Infrequent p53 gene mutation and expression of the cardia adenocarcinomas from a high-incidence area of Southwest China显示文摘INTRODUCTIONAdenocarcinomas of the cardia are the lesionsarising from the proximal stomach or within 3 cm ofthe gastroesophageal junction.These cancerstended to be advanced at the time of presentation,usually with poor prognosis.In recent decade,the incidence of adenocarcinoma of gastric eardiaand esophagus are increasing steadily,while therehas been a decrease in the proportion of the cancersarising from the distal stomach.The | Naoko lida Hideaki Oda Shigetoshi Aiso Takatoshi Ishikawa | 2000 | World Journal of Gastroenterology2000，6，5： | 17 |
| 4 | Trabecular-like Ti-6Al-4V scaffolds for orthopedic: fabrication by selective laser melting and in vitro biocompatibility显示文摘Porous metal scaffolds play an important role in the orthopedic field, due to their wide applications in prostheses implantation. Some previous studies showed that the scaffolds with trabecular bone structure reconstructed via computed tomography had satisfactory biocompatibility. However, the reverse modeling scaffolds were inflexible for customized design. Therefore, a top-down designing biomimetic bone scaffold with favorable mechanical performances and cytocompatibility is urgently demanded for orthopedic implants. An emerging additive manufacturing technique, selective laser melting, was employed to fabricate the trabecular-like porous Ti-6Al-4 V scaffolds with varying irregularities(0.05-0.5) and porosities(48.83%–74.28%) designed through a novel Voronoi-Tessellation based method. Micro-computed tomography and scanning electron microscopy were used to characterize the scaffolds’ morphology.Quasi-static compression tests were performed to evaluate the scaffolds’ mechanical properties. The MG63 cells culture in vitro experiments, including adhesion, proliferation, and differentiation, were conducted to study the cytocompatibility of scaffolds. Compressive tests of scaffolds revealed an apparent elastic modulus range of 1.93–5.24 GPa and an ultimate strength ranging within 44.9–237.5 MPa, which were influenced by irregularity and porosity, and improved by heat treatment. Furthermore, the in vitro assay suggested that the original surface of the SLM-fabricated scaffolds was favorable for osteoblasts adhesion and migration because of micro scale pores and ravines. The trabecular-like porous scaffolds with full irregularity and higher porosity exhibited enhanced cells proliferation and osteoblast differentiation at earlier time, due to their preferable combination of small and large pores with various shapes. This study suggested that selective laser melting-derived Ti-6Al-4 V scaffold with the trabecular-like porous structure designed through Voronoi-Tessellation method, favorable mechanical performance, and good cytocompatibility was a potential biomaterial for orthopedic implants. | Huixin Liang Youwen Yang Deqiao Xie Lan Li Ning Mao Changjiang Wang Zongjun Tian Qing jiang Lida Shen | 2019 | Journal of Materials Science & Technology2019，35，7： | 12 |
| 5 | Microstructure, Mechanical Properties, Corrosion Behavior and Biocompatibility of As-Extruded Biodegradable Mg–3Sn–1Zn–0.5Mn Alloy显示文摘The microstructure evolution and mechanical properties of biodegradable Mg–3Sn–1Zn–0.5Mn alloys were investigated by the optical microscopy, X-ray diffractometer and a universal material testing machine.The corrosion and degradation behaviors were studied by potentiodynamic polarization method and immersion test in a simulated body fluid(SBF). It was found that the as-extruded Mg–3Sn–1Zn–0.5Mn alloy has the fine equiaxed grains which underwent complete dynamic recrystallization during the hot extrusion process, with the second phase particles of Mg_2Sn precipitated on the grain boundaries and inside the grains. The tensile strength and elongation of as-extruded Mg–3Sn–1Zn–0.5Mn alloys were 244 ± 3.7 MPa and 19.3% ± 1.7%, respectively. The potentiodynamic polarization curves in SBF solution indicated the better corrosion resistance of the as-extruded Mg–3Sn–1Zn–0.5Mn alloy in the SBF solution. Immersion test in the SBF solution for 720 h revealed that the corrosion rate of as-extruded Mg–3Sn–1Zn–0.5Mn alloy was nearly 4 ± 0.33 mm/year. The hemolysis rate of as-extruded Mg–3Sn–1Zn–0.5Mn alloy was lower than the safe value of 5% according to ISO 10993-4. As-extruded Mg–3Sn–1Zn–0.5Mn alloy showed good biocompatibility after being implanted into the dorsal muscle and the femoral shaft of the rabbit, and no abnormalities were found after short-term implantation. It was revealed that the as-extruded Mg–3Sn–1Zn–0.5Mn alloy is a promising material for biodegradable implants,which possesses an interesting combination of preferred mechanical properties, better corrosion resistance and biocompatibility. | Lida Hou Zhen Li Hong Zhao Yu Pan Sergey Pavlinich Xiwei Liu Xinlin Li Yufeng Zheng Li Li | 2016 | Journal of Materials Science & Technology2016，32，9： | 10 |
| 6 | Developmentally Regulated Glucosylation of Bitter Triterpenoid in Cucumber by the UDP-Glucosyltransferase UGT73AM3显示文摘 | Yang Zhong Xiaofeng Xue Zhiqiang Liu Yongshuo Ma Kewu Zeng Lida Han Jingjing Qi Dae-Kyun Ro Soren Bak Sanwen Huang Yuan Zhou Yi Shang | 2017 | Molecular Plant2017，10，7： | 7 |
| 7 | An Unusual, Three-Dimensionally Preserved, Large Hadrosauriform Pes Track from 'Mid'-Cretaceous Jiaguan Formation of Chongqing, China显示文摘Three-dimensional tracks provide unique insights into the locomotor mechanics of their track makers. An isolated, large hadrosauriform print attributable to Caririchnium lotus from the 'mid'-Cretaceous Lotus track site (Jiaguan Formation) in China permits reconstruction of the footfall, weight-bearing, and kick-off phases of the step cycle. Large-scale modifications of the pes during the step cycle indicate C. lotus trackmakers were capable of locomotory modifications in response to substrate consistency beyond the 'expected' shift between bipedal and quadrupedal postures. An unusual curvature to the trace of one of the outer digits indicates substantial transverse mobility. The remaining digits demonstrate lesser degrees of transverse movement accompanied by extension of the digits during footfall. The absence of overprinted scale-scratch marks and toe drags are consistent with a vertical kick-off of the pes and concomitant flexion of the digits. This track suggests that pedal mobility in C. lotus track makers was greater than previously suspected and has implications for reconstructions of hadrosauriform locomotion. | XING Lida Phil R.BELL JeraldD.HARRIS Philip J.CURRIE | 2012 | Acta Geologica Sinica(English Edition)2012，86，2： | 6 |
| 8 | Early Jurassic basal sauropodomorpha dominated tracks from Guizhou, China: Morphology, ethology, and paleoenvironment显示文摘The newly discovered large(350 m^2) Yantan dinosaur tracksite, in the Lower Jurassic Ziliujing Formation of Guizhou Province, China, reveals at least 250 footprints of which ~97 can be resolved into trackways of sauropodomorphs. All the trackways are sub parallel likely indicating gregarious behavior. One theropod track(cf. Grallator) was recorded. The sauropodomorph tracks predominantly represent quadrupedal progression(Morphotype A), and footprint morphology is similar to the ichnospecies Liujianpusshunan, characterized by outward pes rotation. Three trackways indicate bipedal progression, and two of these(Morphotype B) indicate inward pes rotation, accompanied by elongate pes digit scratch marks. For the latter phenomenon three possible scenarios are discussed:(1) significant rotation changes accompanying changes in gait,(2) swimming behavior,(3) formation of undertracks.Sedimentological evidence indicates the tracks were made on a linguloid rippled, muddy, immature sandstone substrate characterized by significant differences in substrate consistency across the trackbearing surface. Microbially induced sedimentary structures(MISS) characterized by distinctive wrinkle marks indicate a stressed, probably semi-arid, paleoenvironment that was not conducive to habitation by invertebrate organisms. This is consistent with other evidence that Lower Jurassic sauropodomorph tracks are often associated with semi-arid paleoenvironments. | Lida Xing Martin G. Lockley Dongjie Tang Hendrik Klein Guangzhao Peng Yong Ye Baoqiao Hao | 2019 | Geoscience Frontiers2019，10，1： | 6 |
| 9 | Structure,Orientation and Finite Element Analysis of the Tail Club of Mamenchisaurus hochuanensis显示文摘The structure and orientation of the posterior extremity (tail club) of the caudal vertebrae of Mamenchisaurus hochuanensis Young and Chao, 1972 from the Upper Jurassic Shangshaximiao Formation has been analyzed to determine the tail club function using Finite Element Analysis. Of the four caudal vertebrae composing the tail club, the second largest (C'1') was probably the most proximal, and is fixed with the preceding sequence of the caudal vertebrae, whereas the smallest (C'4') is free and forms the termination of the tail club. Our analysis also suggests that the tail club is more efficient in lateral swinging rather than up-and-down motion, and that the best region for the tail club to impact is at the spine of the largest of the four caudals (C'2'), with a maximum load for impact at about 450 N. The tail club of Mamenchisaurus hochuanensis probably also had limitations as a defense weapon and was more possibly a sensory organ to improve nerve conduction velocity to enhance the capacity for sensory perception of its surroundings. | XING Lida YE Yong SHU Chunkang PENG Guangzhao YOU Hailu | 2009 | Acta Geologica Sinica(English Edition)2009，83，6： | 5 |
| 10 | A structural and data-driven approach to engineering a plant cytochrome P450 enzyme显示文摘Functional manipulation of biosynthetic enzymes such as cytochrome P450 s(or P450 s) has attracted great interest in metabolic engineering of plant natural products.Cucurbitacins and mogrosides are plant triterpenoids that share the same backbone but display contrasting bioactivities.This structural and functional diversity of the two metabolites can be manipulated by engineering P450 s.However,the functional redesign of P450 s through directed evolution(DE) or structure-guided protein engineering is time consuming and challenging,often because of a lack of high-throughput screening methods and crystal structures of P450 s.In this study,we used an integrated approach combining computational protein design,evolutionary information,and experimental data-driven optimization to alter the substrate specificity of a multifunctional P450(CYP87 D20)from cucumber.After three rounds of iterative design and evaluation of 96 protein variants,CYP87 D20,which is involved in the cucurbitacin C biosynthetic pathway,was successfully transformed into a P450 mono-oxygenase that performs a single specific hydroxylation at C11 of cucurbitadienol.This integrated P450-engineering approach can be further applied to create a de novo pathway to produce mogrol,the precursor of the natural sweetener mogroside,or to alter the structural diversity of plant triterpenoids by functionally manipulating other P450 s. | Dawei Li Yongshuo Ma Yuan Zhou Junbo Gou Yang Zhong Lingling Zhao Lida Han Sergey Ovchinnikov Ling Ma Sanwen Huang Per Greisen Yi Shang | 2019 | Science China(Life Sciences)2019，62，7： | 5 |
| 11 | Early Cretaceous dinosaur and other tetrapod tracks of southwestern China显示文摘In recent years the Lower Cretaceous red beds of southwestern China have yielded more than 20 significant dinosaur-dominated tracksites. More than half occur in the Jiaguan Formation with the remainder in the Feitianshan and Xiaoba formations. Collectively these sites provide evidence of at least 13 distinct dinosaurian trackmaker morphotypes, in addition to two avian theropod(bird)morphotypes and pterosaur and turtle tracks. Together these total 17 morphotypes provide a data base of 479 potential trackmakers, probably representing the same number of individuals. Such an ichnological database provides a useful proxy paleoecological census of tetrapod communities in the area during the Early Cretaceous, and is especially significant given the complete absence or scarcity of skeletal remains reported from these formations.The composition of ichnofaunas in all three formations is heavily saurischian(theropod and sauropod) dominated with a high diversity of distinctive theropod morphotypes,mostly assignable to known ichnogenera. Moreover, ichnofaunal data from multiple sites are generally consistent between sites and an indication of the reliability and repeatability of track census data. Such regionally-widespread data are rapidly superseding the information available from the skeletal record in the corresponding area, and must therefore be considered of high paleontological value. | Lida Xing Martin G.Lockley | 2016 | Science Bulletin2016，61，13： | 4 |
| 12 | In vitro and in vivo studies on biodegradable magnesium alloy显示文摘The microstructure, mechanical property, electrochemical behavior and biocompatibility of magnesium alloy(Bio De MSM^(TM)) were studied in the present work. The experimental results demonstrated that grain refining induced by extrusion improves the alloy strength significantly from162 MPa for the as-cast alloy to 241 MPa for the as-extruded one. The anticorrosion properties of the as-extruded alloy also increased.Furthermore, the hemolysis ratio was decreased from 4.7% for the as-cast alloy to 2.9% for the as-extruded one, both below 5%. Bio De MSM^(TM)alloy shows good biocompatibility after being implanted into the dorsal muscle and the femoral shaft of the New Zealand rabbit, respectively, and there are no abnormalities after short-term implantation. In vivo observation indicated that the corrosion rate of this alloy varies with different implantation positions, with higher degradation rate in the femur than in the muscle. | Lida Hou Zhen Li Yu Pan Li Du Xinlin Li Yufeng Zheng Li Li | 2014 | Progress in Natural Science:Materials International2014，24，5： | 4 |
| 13 | Preparation and characterization of nanostructured Al_2O_3-13wt.%TiO_2 ceramic coatings by plasma spraying显示文摘Nanostructured and conventional Al2O3-13wt.%TiO2 ceramic coatings were prepared by plasma spraying with nanostructured agglomerated and conventional powders, respectively. The microstructure and microhardness of the coatings were investigated using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and microhardness measurement. Meanwhile, the friction and wear behaviors were analyzed and compared using a ball-on-disk tribometer. The results show that the conventional coating has lamellar stacking characteristic and has some pores. However, the nanostructured coating shows a bimodal microstructure, which is composed of both fully melted regions and partially melted regions. According to the microstructural difference, the partially melted regions can be divided into liquid-phase sintered regions (a three-dimensional net or skeleton-like structure: Al2O3-rich submicron particles embedded in the TiO2-rich matrix) and solid-phase sintered regions (remained nanoparticles). The microstructural characteristics of the liquid-phase sintered region are formed due to the selective melting of TiO2 nanoparticles during plasma spraying. On the other hand, the TiO2 and Al2O3 nanoparticles of the solid-phase sintered regions are all unmelted during plasma spraying. Due to the existence of nanostructured microstructures, the nanostructured coating has a higher microhardness, a lower friction coefficient, and a better wear resistance than the conventional coating. | WANG Dongsheng TIAN Zongjun SHEN Lida LIU Zhidong HUANG Yinhui | 2009 | Rare Metals2009，28，5： | 4 |
| 14 | New Early Cretaceous Pterosaur-Bird Track Assemblage from Xinjiang, China:Palaeoethology and Palaeoenvironment显示文摘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 lakeshore 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. | HE Qing XING Lida ZHANG Jianping Martin G.LOCKLEY Hendrik KLEIN W.Scott PERSONS IV QI Liqi JIA Chengkai | 2013 | Acta Geologica Sinica(English Edition)2013，87，6： | 4 |
| 15 | Tracking control and parameter identification with quantized ARMAX systems显示文摘Dear editor,After decades of development,system modeling and control theory have developed thoroughly.Various identification,estimation and control methods have been given(1)However,most of these results are based on accurate measurements of the system inputs and outputs.But now,quantized partial-state feedback stabilization of a class of nonlinear cascaded systems and gave a recursive design method for quantized stabilization.Ref.[3]used quantized data to design feedback stabilization control.Ref.[4]studied the parameter identification of set value systems.Ref.[5]considered the adaptive control of first-order systems.Ref.[6]solved the adaptive tracking control of linear systems with binary-valued observations and periodic target. | Lida JING Jifeng ZHANG | 2019 | Science China(Information Sciences)2019，62，9： | 4 |
| 16 | Real-Time Implementation for Reduced-Complexity LDPC Decoder in Satellite Communication显示文摘In this paper,it has proposed a realtime implementation of low-density paritycheck(LDPC) decoder with less complexity used for satellite communication on FPGA platform.By adopting a(2048.4096)irregular quasi-cyclic(QC) LDPC code,the proposed partly parallel decoding structure balances the complexity between the check node unit(CNU) and the variable node unit(VNU) based on min-sum(MS) algorithm,thereby achieving less Slice resources and superior clock performance.Moreover,as a lookup table(LUT) is utilized in this paper to search the node message stored in timeshare memory unit,it is simple to reuse and save large amount of storage resources.The implementation results on Xilinx FPGA chip illustrate that,compared with conventional structure,the proposed scheme can achieve at last 28.6%and 8%cost reduction in RAM and Slice respectively.The clock frequency is also increased to 280 MHz without decoding performance deterioration and convergence speed reduction. | WANG Yongqing LIU Donglei SUN Lida WU Siliang | 2014 | China Communications2014，11，12： | 4 |
| 17 | Theropod assemblages and a new ichnotaxon Gigandipus chiappei ichnosp.nov.from the Jiaguan Formation,Lower Cretaceous of Guizhou Province,China显示文摘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. | Lida Xing Martin G.Lockley Hendrik Klein Rong Zeng Sifu Cai Xiuchun Luo Chen Li | 2018 | Geoscience Frontiers2018，9，6： | 3 |
| 18 | 群体认知的马尔可夫链模型显示文摘着重从认知概念出发研究群体行为。对群体认知建立了一个马尔可夫链模型,并利用马尔可夫链理论讨论了一些群 体现象的性质。 | 王新民 汤兵勇 Lida Xu | 2001 | 东华大学学报(自然科学版)2001，27，3： | 3 |
| 19 | Effectiveness of two conventional methods for seismic retrofit of steel and RC moment resisting frames based on damage control criteria显示文摘This study investigates the efficiency of two types of rehabilitation methods based on economic justification that can lead to logical decision making between the retrofitting schemes. Among various rehabilitation methods, concentric chevron bracing(CCB) and cylindrical friction damper(CFD) were selected. The performance assessment procedure of the frames is divided into two distinct phases. First, the limit state probabilities of the structures before and after rehabilitation are investigated. In the second phase, the seismic risk of structures in terms of life safety and financial losses(decision variables) using the recently published FEMA P58 methodology is evaluated. The results show that the proposed retrofitting methods improve the serviceability and life safety performance levels of steel and RC structures at different rates when subjected to earthquake loads. Moreover, these procedures reveal that financial losses are greatly decreased, and were more tangible by the application of CFD rather than using CCB. Although using both retrofitting methods reduced damage state probabilities, incorporation of a site-specific seismic hazard curve to evaluate mean annual occurrence frequency at the collapse prevention limit state caused unexpected results to be obtained. Contrary to CFD, the collapse probability of the structures retrofitted with CCB increased when compared with the primary structures. | Seyed Bahram Beheshti Aval Hamed Sadegh Kouhestani Lida Mottaghi | 2017 | Earthquake Engineering and Engineering Vibration2017，16，3： | 3 |
| 20 | A new Early Cretaceous dinosaur track assemblage and the first definite non-avian theropod swim trackway from China显示文摘The trackway of a swimming theropod (ichnogenus Characichnos) is reported from the Lower Cretaceous Feitianshan Formation of Sichuan, China. These swim tracks help confirm that non-avian theropods were capable of forging moderately deep bodies of water. The trackway occurs on the same surface as a typical walking trackway of a sauropod (ichnogenus Brontopodus). Both occurrences are the first reported from the Cretaceous of Sichuan, and the swim tracks are the first well-preserved example of a Characichnos trackway from China. Additionally, a theropod walking trackway and several ornithopod walking trackways (similar to the ichnogenus Caririchnium) occur in the same horizon. The ornithopod trackways show a parallel orientation, suggesting gregarious behavior of the trackmakers, which may have been iguanodontiforms and/or hadrosauriforms. The co-occurrence of theropod swim tracks and theropod walking tracks suggests a fluctuation of water depth within a distinct time span. | XING LiDa LOCKLEY Martin G ZHANG JianPing MILNER Andrew R C KLEIN Hendrik LI DaQing PERSONS IV W Scott EBI JieFang | 2013 | Chinese Science Bulletin2013，58，19： | 3 |
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