检索结果-南通市图书馆

Acta Geologica Sinica(English Edition) 2024年第2期98卷 303-310页

作者： ZHANG Honggang YIN Yalei PEI Rui ZHOU Changfu College of Earth Science and Engineering Shandong University of Science and TechnologyQingdaoShandong 266570China College of Paleontology Shenyang Normal UniversityShenyang 110034China key laboratory of evolution of past life in ne asia Ministry of Natural ResourcesShenyang 110034China key laboratory of evolutionary Systematics of Vertebrates Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China CAS Center for Excellence in life and Paleoenvironment Beijing 100044China

Three eusauropod teeth(SDUST-V1064,PMOL-AD00176,PMOL-ADt0005)are reported from the Lower Cretaceous Yixian Formation of Ningcheng,southeastern Inner Mongolia,*** of them(SDUST-V1064,PMOL-AD00176)are assigned to early-diverging titanosauriforms in having slightly mesiodistal expansion at the base of the tooth crown,a slenderness index value>2.0 andnew dental information of early-diverging titanosauriforms,for example,the enamel on the labial side thicker than that on the lingual side,an enamel/dentine ratio of 0.26 and a boss present on the lingual side of the dentine of the crown.

关键词： teeth Titanosauriformes Lower Cretaceous Yixian Formation Ningcheng

new material of Coniopteris simplex from the Middle Jurassic of the Ordos Basin,Inner Mongolia,China and implications on its spatio-temporal distribution and paleogeography

在线全文

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2024年第2期13卷 199-211页

作者： Yun-Feng Li Chang-Lu Zhang Fei Liang Xiao Tan Fan-Hao Gong Chun-Lin Sun Tao Li Yu-Ling Na Research Center of Paleontology and Stratigraphy Jilin UniversityChangchun 130026Jilin ProvinceChina College of Earth Sciences Jilin UniversityChangchun 130061Jilin ProvinceChina College of Paleontology Shenyang Normal UniversityShenyang 110034Liaoning ProvinceChina key lab of evolution of past life in ne asia Ministry of Natural ResourcesShenyang Normal UniversityShenyang 110034Liaoning ProvinceChina Shenyang Center of Geological Survey China Geological SurveyShenyang 110034Liaoning ProvinceChina

Coniopteris simplex is a common component in many Jurassic ***,due to morphological variations in sterile fronds and incomplete preservation of reproductive organs,its classification has been controversial for a long ***,we present new material collected from the Middle Jurassic Yan’an Formation in the Ordos Basin,Inner *** new material reveals important morphological characters,including hemi-dimorphic fronds,two forms of sterile pinnae,short-stalked sori and sporangia on fertile fronds,annulus of sporangium composed of about 30 cells,in situ rounded triangular spores with protruded suture,and the lips of trilete laesura encircled by one or two rows of small *** on these observations,we emended the diagnosis of this common *** spatio-temporal distribution of Coniopteris simplex shows that the iconic species was restricted to the paleolatitudes ranging from 19.5°N to 48.9°N in the Northern Hemisphere during the Early—Late Jurassic,mainly distributed in the tropical to paratropical zones,and the paleolongitude ranging from 9.6°E to 129.3°E,which may be limited by the opening of the Viking Corridor and the splitting of the Central Atlantic Ocean.

关键词： Coniopteris simplex Yan'an Formation Middle Jurassic Inner Mongolia Paleogeography

new U-Pb zircon ages document Late Triassic Tianqiaoling flora of eastern Jinlin,ne China

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2021年第5期64卷 807-812页

作者： Yuhui FENG Tao YANG Fei LIANG Ge SUN key lab of evolution of past life in ne asia Ministry of Natural ResourcesShenyang Normal UniversityShenyang 110034China College of Paleontology Shenyang Normal UniversityShenyang 110034China key lab for evolution of past life and Environment in ne asia Ministry of EducationJilin UniversityChangchun 130026China

The Late Triassic Tianqiaoling flora is well-known in China,and its discovery has changed our understanding of Chinese Late Triassic phytogeographical *** broadly,this flora has great significance for the study of phytogeography in East asia during this ***,the previous dating of this flora was only evidenced by plant fossils and stratigraphic correlation,and the accurate dating has still not been *** this study,rhyolite samples were collected from the bottom of the Tianqiaoling Formation,which is conformally contacted the Tianqiaoling flora-bearing *** results of new U-Pb dating gave ages for the rhyolites of 212.8±2.5 Ma,indicating the end of Malugou Formation and initial Tianqiaoling Formation in deposition occurred in the late Norian(~227–208.5 Ma),which is contemporaneous with the peak of the Tianqiaoling flora in *** radiometric dating results are basically consistent with paleobiological *** new age provides a key anchor point for regional stratigraphic correlation of the Tianqiaoling flora with its related Late Triassic floras,and contribute to a better understanding of the geology and phytogeography in the East asia,particularly in the"triangle region"covering the eastern Jilin(China),South Primorye(Russia)and Southwest Japan,during the Late Triassic.

关键词： Late Triassic Tianqiaoling flora U-Pb zircon ne China

new Discovery of Nyssidium from the Yong’ancun Formation in Jiayin,China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2019年第4期93卷 1137-1138页

作者： LIANG Fei YANG Tao YUAN Yalan College of Paleontology Shenyang Normal UniversityShenyang 110034China key lab of evolution of past life in ne asia Ministry of Natural ResourcesShenyang 110034China State key laboratory of Palaeobiology and Stratigraphy(Nanjing Institute of Geology and Palaeontology CASNanjing 210008China

Objective Follicular fruits in raceme infructescences with subparallel longitudinal ridges attached to the shoots were assigned to a widely used extinct genus of Nyssidium,which was suggested by Iljinskaja(1974)as the... 详细信息

关键词： new Formation China

A new species of Platanus from the Cenomanian(Upper Cretaceous) in eastern Heilongjiang, China

在线全文

学校读者我要写书评

暂无评论

Geoscience Frontiers 2019年第4期10卷 1535-1541页

作者： Ge Sun Tatiana Kovaleva Fei Liang Tao Yang Yuhui Feng key laboratory of evolution of past life and Environmental Changes in ne asia Ministry of EducationChangchun 130026China College of Geosciences Jilin UniversityChangchun 130061China College of Paleontology Shenyang Normal UniversityShenyang 110034China

The stratigraphic division and sequence of the Upper Cretaceous sediments in eastern Heilongjiang Province,China,have been ambiguous and controversial,mainly due to a lack of biostratigraphically useful fossils and related radiometric dating.A new species of angiospermous fossil *** heilongjiangensis ***.,from Qitaihe in eastern Heilongjiang has been found in sediments conformably above which zircons from a rhyolitic tuff has been dated by U-Pb radiometric methods as 96.2±1.7 *** that the Upper Houshigou Formation is of Cenomanian *** discovery not only provides new data to improve our stratigraphic understanding of the Houshigou Formation,but also shows that Platanus flourished in the early Late Cretaceous floras of the *** new study also indicates active volcanism taking place in the eastern Heilongjiang region during the Cenomanian of the Late Cretaceous.

关键词： Platanus Cenomanian Upper Cretaceous Dating Qitaihe Heilongjiang

Permineralized Calamitean Axes from the Upper Permian of Xinjiang, Northwest China and Its Paleoecological Implication

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2018年第2期29卷 237-244页

作者： Fayao Chen Xiao Shi Jianxin Yu Hongfei Chi Jun Zhu Hui Li Cheng Huang State key laboratory of Biogeology and Environmental Geology School of Earth Sciences China University of Geosciences College of Earth Sciences Jilin University key-lab for evolution of past life and Environment in Northeast asia Ministry of Education Jilin University

Two anatomically preserved calamitean axes are reported for the first time from the Late Permian Wutonggou Formation in the southern Bogda Mountains, Xinjiang Uygur Autonomous Re- gion, Northwest China. Based on the anatomical features, these axes are assigned to Arthropitys. A new species Arthropitys taoshuyuanensis sp. nov. is established. A. taoshuyuanensis sp. nov. possesses a large pith and comprises large pith cavity and a narrow perimedullary zone at the nodes and diaphragms at the internodes. Carinal canals are circular and surrounded by a single layer of metaxylem tracheids. Secondary xylem is divided into interfascicular rays and fascicular wedges. Interfascicular rays are ini- tially four to five cells wide and taper abruptly centrifugally. Fascicular wedge consists of thick-walled tracheids and thin-walled fascicular ray cells. Radial tracheid walls have uniseriate or biseriate circular pits, or scalariform pits. The absence of growth rings in the Arthropitys specimens indicates that they probably lived in the wetland area under stable annual temperature and water sufficient conditions.

关键词： Arthropitys calamitean horsetail Late Permian Xinjiang.

Late Cretaceous Aquatic Angiosperms from Jiayin,Heilongjiang,Northeast China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2008年第6期82卷 1133-1140页

作者： QUAN Cheng SUN Ge Research Center of Paleontology ＆ Stratigraphy Jilin University Changchun Jilin 130026 China key-lab for evolution of past life and Environment in ne asia Ministry of Education Changchun Jilin 130026 China Paleontological Institute of Shenyang Normal University Shenyang Jilin 110034 China

Three taxa of Late Cretaceous aquatic angiosperms, Queruexia angulata （Lesq.） Krysht., Cobbania corrugata （Lesq.） Stockey et al. and nelumbites cf. extenuinervis Upchurch et al. from Jiayin of Heilongjiang, ne China, are described in detail. Among them, Cobbania and nelumbites from the Upper Cretaceous in China are reported for the first time. The aquatic angiosperm assemblage of Queruexia-Cobbania-nelumbites appears to imply a seasonal, warm and moist environment in the Jiayin area during the Santonian-Campanian time.

关键词： aquatic angiosperm Late Cretaceous Jiayin Heilongjiang environment

A new Species of Coniopteris moguqiensis sp. nov. from the Middle Jurassic Wanbao Formation in Eastern Inner Mongolia, China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2019年第5期93卷 1317-1324页

作者： ZHANG Yujin LIU Bingcai LIANG Fei Shenyang Center of Geological Survey China Geological SurveyShenyang 110034China College of Paleontology Shenyang Normal UniversityShenyang 110034China key lab of evolution of past life in ne asia Ministry of Natural ResourcesShenyang 110034China State key laboratory of Palaeobiology and Stratigraphy(Nanjing Institute of Geology and Palaeontology CAS)Nanjing 210008China

In recent years, an increasing number of plant fossil leaves and petrified woods have been discovered from the Middle Jurassic Wanbao Formation in Moguqi Town of Inner Mongolia, ne China. Here, we describe a new species of Coniopteris moguqiensis sp. nov. preserved as a fragment with fertile and sterile pinnules. The sterile ultimate pinnules are elongate ovate with sphenopteriod type venation, and fertile pinnules are usually isolated, bipinnate at least with the sorus apical, elliptical, 1 mm in diameter;sporangia are almost globular, 100-150 μm in diameter, and the annulus is vertical. In situ spores are rounded-triangular in polar view, 25-30 μm in diameter with sides straight and slightly convex;trilete, laesurae are thin and slightly straight;the exine surface is usually psilate under the light microscope but finely reticuloid sculptured on the proximal view under a scanning electronic microscope. The fern genus Coniopteris usually suggests a warm and humid environment, which is consistent with the palaeoclimatic conditions of petrified wood and megafossil plants. The new discovery further supplements the floral composition of the Wanbao Formation, providing new material for understanding the evolutionary trend and classification of Coniopteris.

关键词： Coniopteris Wanbao Formation in situ spores Middle Jurassic Inner Mongolia

Facies Architecture Model of the Shimentan Formation Pyroclastic Rocks in the Block-T Units, Xihu Sag, East China Sea Basin, and its Exploration Significance

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2019年第4期93卷 1076-1087页

作者： DAI Xiaojuan TANG Huafeng ZHANG Tao ZHAO Pengjiu XU Chunming KONG Tan ZHAO Tianliang WANG Pujun Collegeof Earth Sciences Jilin UniversityChangchun130061China key laboratory of Mineral Resources Evaluation in Northeast asia Ministry of Land and ResourcesChangchun 130061China key lab for evolution of past life and Environment in Northeast asia Ministry of EducationChangchun 130026China Shanghai Branch of CNOOC Ltd. Shanghai 200030China

A gas field consisting of volcanic reservoir rocks was discovered in the block-T units of the Xihu Sag,East China Sea *** lithology of the volcanic rocks is dominated by tuff and reworked *** lithofacies are dominated by base surge deposits of explosive *** the architecture model of volcanic facies is still uncertain,it has restricted the exploration and development of mineral resources in this *** core and cuttings data,the lithology,lithofacies,geochemistry as well as grain size characteristics of volcanic rocks were *** on these analyses,the volcanic rocks in the well section are divided into three eruptive *** transport direction of each volcanic eruption is analyzed using crystal fragment size *** facies architecture of the block-T units was established based on the reconstruction results of *** results show that the drilling reveals proximal facies(PF)and distal facies(DF)of the volcanic ***,the crater-near crater facies(CNCF)are not *** with the reservoirs of the Songliao Basin,it is shown that the volcanic rocks in the Xihu Sag have good exploration potential;a favorable target area is the CNCF near the contemporaneous fault.

关键词： volcanic rocks Shimentan Formation facies architecture eruptive stage East China Sea Basin

new Records of Petrified Wood from the Middle Jurassic in Ar Horqin Banner,Inner Mongolia

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2021年第2期95卷 684-686页

作者： ZHANG Yujin TIAN Ning LIANG Fei ZHANG Chao LI Wei LOU Renxing MA Yongfei DU Jiyu Shenyang Center of the Geological Survey Chinese Geological SurveyShenyang 110034China College of Palaeontology Shenyang Normal UniversityShenyang 110034China key lab of the evolution of past life in ne asia Ministry of Natural ResourcesShenyang 110034China College of Earth Sciences Jilin UniversityChangchun 130061China

Objective Petrified wood,as an important component of plant fossils,plays a significant role in understanding the floral composition and terrestrial palaeoclimates of the geological *** abundant petrified woods have been found from the Mesozoic deposits in the Great Xing’an Range,ne China,it was rare for systematic investigations to be carried out for these fossil wood remains.

关键词： Jurassic Middle abundant