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Journal of Palaeogeography 2019年第4期8卷 360-367页

作者： Ting Gao Da-Qing Li Long-Feng Li Jing-Tao Yang Institute of Vertebrate paleontology and college of Life Science and Technology Gansu Agricultural University

Plesiosaurs are one of the common groups of aquatic reptiles in the Mesozoic,which mainly lived in marine *** plesiosaurs are rare in the world,especially from the *** present paper reports the first freshwater plesiosaur,represented by four isolated teeth from the Middle Jurassic fluviolacustrine strata of Qingtujing area,Jinchang City,Gansu Province,Northwest *** teeth are considered to come from one *** comparative analysis of the corresponding relationship between the body and tooth sizes of the known freshwater plesiosaur shows that Jinchang teeth represent a small-sized *** on the adaptive radiation of plesiosaurs and the palaeobiogeographical context,we propose a scenario of a river leading to the Meso-Tethys in the Late Middle Jurassic in Jinchang area,which may have provided a channel for the seasonal migration of plesiosaurs.

关键词： Freshwater plesiosaur Middle Jurassic Jinchang Gansu Province Palaeobiogeography

A DESIRABLE SECTION FOR THE DEVONIANCARBONIFEROUS BOUNDARY STRATOTYPE IN GUILIN, GUANGXI, SOUTH CHINA

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Science in China,Ser.B 1987年第7期30卷 751-765页

作者：俞昌民王成源阮亦萍殷保安李镇梁韦炜烈 Nanjing Institute of Geology and paleontology Academia Sinica Guilin college of Metallurgical Geology

This paper presents the description of the Nanbiancun section in Guilin, Guangxi, South China, wherc the Devonian-Carboniferous boundary beds are well developed and exposed and can serve as the Devonian-Carboniferous boundary stratotype. This is the only section hitherto found in the world that displays the praesulcata—sulcata evolutional lineage and is in accordance with the operating definition of the D-C boundary. A. proposal is made to take the Nanbiancun section as one of the best candidate sections for the D-C boundary stratotype.

关键词： SOUTH CHINA A DESIRABLE SECTION FOR THE DEVONIANCARBONIFEROUS BOUNDARY STRATOTYPE IN GUILIN GUANGXI

The Late Triassic I-Type Granites from the Longmu Co-Shuanghu Suture Zone in the interior of Tibetan Plateau, China： Petrogenesis and Implication for Slab Break-Off

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Acta Geologica Sinica(English Edition) 2018年第3期92卷 935-951页

作者： ZHAO Zhen WU Zhenhan LU Lu YU Junqiu WU Yanjun Chinese Academy of Geological Sciences Beijing 10037 China college of paleontology Shenyang Normal University Shenyang 110034 China

The Jiangaidarina granitic mass(JM) is an important part of the magmatic belt in Longmu CoShuanghu Suture Zone(LSSZ) in the central Tibetan Plateau. An integrated research involving wholerock geochemistry, zircon LA-ICP-MS U-Pb ages and Hf isotopic compositions was carried out to define the timing, genesis and tectonic setting of the JM. Zircon LA-ICP-MS U-Pb ages have been obtained ranging from 210 to 215 Ma, rather than the Early Jurassic as previously thought. Fifteen granite samples contain hornblendes and show a negative correlation between POand SiO, indicating that the JM is an I-type granite. All the granites are enriched in LREE relative to HREE, with negative Eu anomalies(Eu/Eu*=0.56-0.81), and have similar trace elements patterns, with depletion of Ba, Nb, Sr and P. These suggest that the JM was fractionated, and this is also proved by the characteristic of negative correlations between oxide elements(TiO, MgO, FeOt, MnO, CaO) and SiO. Almost all ε(t) values of the granites are between-10.3 and-5.8, implying that the JM has a crustal source intimately related with the South Qiangtang Block(SQB), except for one(+10.2), showing a minor contribution from mantle ***, relatively low NaO/KO ratios(0.42-0.93) and high A/CNK values(0.91-1.50) reflect that the JM was predominately derived from the medium-high potassium basaltic crust, interacted with greywacke. Our new geochemical data and geochronological results imply that the Late Triassic magmas were generated in a post-collisional tectonic setting, probably caused by slab break-off of the Longmu Co-Shuanghu Tethyan Ocean(LSTO). This mechanism caused the asthenosphere upwelling, formed extension setting, offered an enormous amount of heat, and provided favorable conditions for emplacement of voluminous felsic magmas. Furthermore, the LSTO could be completely closed during the Middle Triassic, succeed by continental collision and later the slab broke off in the Late Triassic.

关键词： the Late Triassic I-type granite slab break-off Longmu Co-Shuanghu Suture Tibetan Plateau China

Seismic volcanostratigraphy of large, extrusive complexes in continental rift basins of Northeast China：Analysis of general bedding patterns in volcanostratigraphy and their seismic reflection configurations

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Journal of Central South University 2016年第6期23卷 1459-1467页

作者：衣健王璞珺高有峰陈崇阳赵然磊 Earth Science college Jilin University Changchun130061 China paleontology and Stratigraphy Research Center Jilin University Changehun 130061 China

The aim of this work is to establish volcanic seismic reflection configuration models in the rift basins of Northeast China from a new perspective,the volcanostratigraphic ***,the volcanostratigraphic structure of an outcrop near the Hailaier Rift Basin was analyzed to understand the characteristics and causal factors of physical ***,3D seismic reflection data and analysis of deep boreholes in the Songliao Rift Basin were used to establish the relationship between volcanic seismic reflection configurations and volcanostratigraphic *** studies suggested that in volcanic successions,physical boundaries coincide with volcanic boundaries,and their distributions are controlled by the stacking patterns of volcanic ***,volcanic seismic reflection configurations can be interpreted in terms of the stacking patterns of volcanic *** are also referred to as general bedding patterns in ***,four typical seismic reflection configurations were identified,namely,the chaotic,the parallel continuous,the hummocky,the multi-mound superimposed and the *** corresponding interpretation models comprised single massive unit,vertical,intersectional,lateral multi-mound,and composite stacking *** hummocky and composite reflection configurations with intersectional and composite stacking patterns are the most favorable for the exploration of volcanic reservoirs in rift basins.

关键词： seismic volcanostratigraphy volcanostratigraphic structure seismic refection configuration stacking patterns volcanic reservoirs

Model-based assessment of muscle forces and strain distribution in the femur of Cabot’s Tragopans(Tragopan caboti)

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Avian Research 2023年第4期14卷 706-715页

作者： Xinsen Wei Zihui Zhang Institute of Geology and paleontology Linyi UniversityLinyi276000China college of Life Sciences Capital Normal UniversityBeijing100048China

The hindlimbs play a crucial role in bird locomotion,making the biomechanical properties of the musculoskeletal system in these limbs a focal point for researchers studying avian ***,a comprehensive analysis of the mechanical performance within the long bones of hindlimbs during locomotion remains *** the present study,the strain and deformation of the femur of Cabot’s Tragopans(Tragopan caboti)were *** employed inverse simulation to calculate the force and moment of femoral muscles during mid-stance terrestrial locomotion and conducted finite element analysis to calculate femoral *** showed that during mid-stance,the femur experiences combined deformation primarily characterized by torsion,bending,and *** emphasises the importance of considering the influence of varying loads on bone adaptation when investigating bone form-function *** were found to play a significant role in offsetting joint loads on the femur,subsequently reducing the deformation and overall strain on the *** reduction enhances femoral safety during locomotion,allowing birds to meet mechanical demands while maintaining a lightweight bone ***,the *** caudalis significantly reduces torsional deformation of the proximal femur,protecting the vulnerable femoral neck from high fracture risk induced by rotation *** that the femur torsion during terrestrial locomotion in birds is associated with changes in hindlimb posture due to their adaptation to flight,the characteristics of *** caudalis may provide insight into the locomotor evolution of theropods and the origin of avian flight.

关键词： Cabot’s tragopan Femur Finite element analysis Inverse simulation Muscle force Strain

Distribution of Tuvaella Brachiopod Fauna and Its Tectonic Significance

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Journal of Earth Science 2011年第1期22卷 11-19页

作者：王成文李宁孙跃武宗普 college of Earth Sciences Jilin University Research Center of paleontology & Stratigraphy Jilin University School of Earth and Space Sciences Peking University

Tuvaella brachiopod fauna are distributed in an arc in three areas, including the Zeya-Hailar （海拉尔）-Shinejinst area, the Najramdal Uul-Kyzyl area, and the Barkol-Fuyun （富蕴） area. The Tuvaella fauna in the Zeya-Hailar-Shinejinst area are distributed in the northern margin of Jiamusi （佳木斯）-Mongolia block along the Mongolia-Okhotsk suture between the Siberia plate and the Jiamusi-Mongolia block but not appear in the corresponding Siberia plate. The Tuvaella fauna in the Najramdal Uul-Kyzyl area are distributed in the southwestern part of the Siberia plate as the accelerated fold belts during the Salairian-Caledonian periods, and those in the Barkol-Fuyun area are distributed in the northeastern margin of Kazakhstan plate. They are distributed along the Irtysb suture between the Siberia plate and the Kazakhstan plate. The Tuvaeila fauna became domestic fauna during the Wenlock and Pridoli （Middle-Late Silurian） and form a unique biogeographic province, i.e., the Mongolia-Okhotsk Province. This biogeographic province is sustained to the Mississippian （Carboniferous）, perhaps due to the semiclosed state of the Mongolia-Okhotsk Ocean. The northeastern margin （right now the southwestern margin） of Siberia plate, the northern margin of Jiamusi-Mongolia block, and the northeastern margin of Kazakhstan plate might be conjuncted in an arc region from Wenlock to Mississippian, along the southern margin of the Irtysh-Mid Mongolia-Okhotsk Ocean. This is coincident with the fact that the Siberia plate rotated 180° clockwise since the Mesozoic and located in the middle-high latitude during Devonian, and the coral reef limestone is widely developed in the Jiamusi- Mongolia block during the Early and Middle Devonian, which suggests that the block was positioning in middle-lower latitude at that time and that the Kazakhstan plate was also located in low latitude then.

关键词： Tuvaella brachiopod fauna Mongolia-Okhotsk Province Jiamusi-Mongolia block Irtysh-Mid Mongolia-Okhotsk Ocean.

A Spore-Pollen Assemblage from the Damoguaihe Formation in the Tamutsag Basin, Mongolia and Its Geological Implication

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Acta Geologica Sinica(English Edition) 2014年第1期88卷 46-61页

作者： WANG Liyan WAN Chuanbiao SUN Yuewu college of Geosciences Jilin University Research Center of paleontology and Stratigraphy Jilin University Exploration and Development Research Institute of Daqing Oilfield Company Limited

Based on the palynological data from Well Ta-19-36 and Well Ta-19-37 in the Ta＇nan Sag, and Well Ta-22-1 and Well Ta-21-1 in the Bayin Gobi Sag, a spore-pollen assemblage from the Damoguaihe Formation is named as Cicatricosisporites minutaestriatus- Aequitriradites spinulosus-Protopinus sp. assemblage in the Tamutsag Basin, Mongolia. The assemblage is characterized by abundant gymnosperm pollen and diverse fern spores, counted 46.35%–65.57% and 34.43%–52.58% in percentage respectively. Among the gymnosperm pollen, Pinuspollenites sp.（2.66%–16.94%）, Protopinus sp.（0–11.38%） and Protopicea sp.（0–10.81%） are dominant; and Alisporites sp., Cerebropollenites sp., Podocarpidites sp., and Abietineaepollenites sp. are common. Some important elements, such as Chasmatosporites sp., Callialasporites prominulus, Parvisaccites sp., Parcisporites sp., Jiaohepollis cf. annulatus, J. bellus, J. verus, Polycingulatisporites sp., Schizaeoisporites certus, Classopollis annulatus are seen. Within the fern spores, Osmundacidites wellamanii（0.85%–4.93%）, Appendicisporites sp.（0–4.45%）, Baculatisporites comaumensis（0.80%–2.87%）, Cicatricosisporites sp.（0.51%–2.66%）, C. minor（0–2.14%）, Foraminisporis asymmetricus（0–2.40%）, Aequitriradites sp.（0– 2.19%） and Cyathidites minor（0–2.13%） are dominant; and some specie of Densoisporites, Cooksonites, Impardecispora, Pilosisporites, Schizaeosprites, Fixisporites, Leptolepidites, Trilobosporites, Kuylisporites, Klukisporites, Hsuisporites, Couperisporites, Maculatisporites are seen. The angiosperm pollen are rare in the assemblage, characterized by Clavatipollenites sp.（0–0.80%） and Songipollis sp.（0–0.27%）. The geological age of the Damoguaihe Formation is assigned to Hauterivian – Barremian of Early Cretaceous according to the palynological data, due to the fact that there existed a lot of diverse spores of the family Schizaeaceae and prosperous gymnosperm saccat pollen which the corpus and sacci are differentiated completely, and the presence of

关键词： Paleoclimate spore-pollen assemblage Early Cretaceous Damoguaihe Formation Tamutsag Basin

A Mesozoic Pompeii: History of the Jehol Biota's Rise and Fall

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Acta Geologica Sinica(English Edition) 2017年第5期91卷 1893-1903页

作者： SHAO Tiequan ZHANG Hu WANG Qi LIU Yunhuan ZHANG Yanan college of Earth Science and Resources Chang'an University State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Paleontology Chinese Academy of Sciences

The Jehol fauna was initially represented by a bony fish, concostracan and an insect, as a Lycoptera davidi-Eosestheria-Ephemeropsis trisetalis association,but since the researches of recent decades, the Jehol Biota is now completely different from the past low-diversity, and encompasses a native terrestrial biota that includes many well-preserved vertebrates, invertebrates and plants. There are more than 20 important biological categories, thousands of taphonomically unusual fossils, especially noted for the wide variety of biological tissues. The Jehol Biota has caused a sensation in the world with its wide distribution, large quantity, great variety, fine preservation and detailed information, which records the rise and fall of the numerous taxa, and provides significant evidence for three origins： of birds, eutherian mammals, and angiosperms. The Jehol Biota is a highlight of basic scientific research in China, and we honor it as a world-class fossil treasury and ＂a Mesozoic Pompeii＂.

关键词： geoheritage paleontology Jehol Biota evolutionary origins Jurassic-Cretaceous NortheastAsian region Liaoning province

An Updated Review of the Middle-Late Jurassic Yanliao Biota: Chronology,Taphonomy,paleontology and Paleoecology

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Acta Geologica Sinica(English Edition) 2016年第6期90卷 2229-2243页

作者： XU Xing ZHOU Zhonghe Corwin SULLIVAN WANG Yuan REN Dong Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences college of Life Sciences Capital Normal University

The northeastern Chinese Yanliao Biota （sometimes called the Daohugou Biota） comprises numerous, frequently spectacular fossils of non-marine organisms, occurring in Middle-Upper Jurassic strata in western Liaoning, northern Hebei, and southeastern Inner Mongolia. The biota lasted for about 10 million years, divided into two phases： the Bathonian-Callovian Daohugou phase （about 168-164 million years ago） and the Oxfordian Linglongta phase （164-159 million years ago）. The Yanliao fossils are often taphonomically exceptional （many vertebrate skeletons, for example, are complete and accompanied by preserved integumentary features）, and not only are taxonomically diverse but also include the oldest known representatives of many groups of plants, invertebrates, and vertebrates. These fossils have provided significant new information regarding the origins and early evolution of such clades as fleas, birds, and mammals, in addition to the evolution of some major biological structures such as feathers, and have demonstrated the existence of a complex terrestrial ecosystem in northeast China around the time of the Middle-Late Jurassic boundary.

关键词： Yanliao Biota Daohugou phase Linglongta phase Middle-Late Jurassic Yanliao area

A Miocene ostrich fossil from Gansu Province,northwest China

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Chinese Science Bulletin 2005年第16期50卷 1808-1810页

作者： HOU Lianhai ZHOU Zhonghe ZHANG Fucheng WANG Zhao Institute of Vertebrate paleontology and Paleoanthropology Chinese Academy of Sciences Beijing 100044 China Peking Union Medical college Beijing 100730 China

A pelvic skeleton, recognized as a large terrestrial bird in the field, wasrecently collected by our paleomamrnalo-gist colleagues from the Institute of Vertebratepaleontology and Paleoanthropology from the late Miocene sandy mudstones in the Linxia Basin inGansu Province, northwest China. We have further referred this bird to as an early representative ofostrich. Ostrich fossils usually coexisted with the famous Hipparion Fauna from the Miocene toPliocene. The Linxia Basin is well known for producing a continuous and complete sequence ofCenozoic sediments ranging from the Oligocene to Holocene, with abundant mammals and a few *** fossil ostrich was believed to be living in an open grassland or wetland.

关键词：中国甘肃动物化石鸵鸟中新世时代