检索结果-南通市图书馆

Evolution of insect diversity in the jehol biota

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2010年第12期53卷 1908-1917页

作者： ZHANG HaiChun WANG Bo FANG Yan State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China

Insects of the jehol biota,also known as the jehol Entomofauna,can be divided into three phases,approximately corresponding to the early,middle,and late jehol *** early phase of the entomofauna is found in the Dabeigou Formation and its coeval horizons(ca.135-130 Ma).The middle phase is recorded from the lower-middle Yixian Formation(underlying the Jingangshan Bed) and its coeval strata(ca.130-122.5 Ma).The late phase is found in the lower Jiufotang Formation,the upper Yixian Formation(the Jingangshan and Huanghuashan beds) and their coeval horizons(ca.122.5-120 Ma).In major distribution areas of the jehol biota,the entomofauna changed greatly in species diversity with about 150 species in about 40 families and 11 orders in the early phase,a great increase up to about 500 species in about 100 families and 16 orders in the middle phase,and a decline to about 300 species in about 80 families and 14 orders in the late *** entomofauna can also be divided into four insect communities based on habitats or five insect groups based on feeding *** community or group varied in species diversity in a similar trend to the whole ***,it kept a comparatively stable position in the *** the four communities,the highest species diversity occurred in the forest community,followed by the aquatic,the soil,and the alpine *** the five groups,the highest species diversity appeared in the phytophagous group,followed by the carnivorous,the parasitic,the saprophagous,and the heterophagous groups.

关键词： jehol biota insects three phases species diversity ecosystem diversity evolution

Solenites (Czekanowskiales) from the Late Mesozoic jehol biota of Southeastern Jilin,China and its Paleoclimatic Implications

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2015年第4期89卷 1088-1102页

作者： LI Yunfeng SUN Chunlin LI Tao NA Yuling CHEN Yuejun XING Dehe Key Laboratory for Evolution of Past Life and Environment in Northeast Asia Ministry of Education Research Center of Palaeontology & Stratigraphy Jilin University Shenyang Institute of Geology and Mineral Resources Geological Museum of Jilin University

Situated at the easternmost area of the Late Mesozoic jehol biota, China, abundant fossils, including invertebrates, vertebrates and plants, were collected from the Early Cretaceous Yingzuilazi Formation of the Baishan Basin, southeastern Jilin. The faunal remains from this formation distinctly belong to the Early Cretaceous Lycoptera-Ephemeropsis-Eosestheria assemblage of the jehol biota. Based on the gross leaf morphology and epidermal structures, two new species and one indeterminate species of genus Solenites （Czekanowskiales）, S. baishanensis sp. nov., S. gracilis sp. nov. and S. sp. are described in this paper. This is the first fossil plant of Czekanowskiales reported from this new fossil locality of the easternmost area of the Late Mesozoic jehol biota, China. The new discovery contributes to improve our knowledge for understanding of leaf morphology, epidermal characters and diversity of this genus during the Early Cretaceous time, and extends geologic and geographic distribution of Solenites in northern China and Eurasia. Along with consideration of associated plant and faunal assemblages and sedimentology, we suggest that the regional climate was warm and moderately humid with seasonal temperature and precipitation variations in warm-temperate zone during the Early Cretaceous.

关键词： Solenites Early Cretaceous jehol biota southeastern Jilin China

Vertebrate diversity of the jehol biota as compared with other lagersttten

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2010年第12期53卷 1894-1907页

作者： ZHOU ZhongHe WANG Yuan Key Laboratory of Evolutionary Systematics Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China

In the last twenty years,the extraordinary discoveries of vertebrate fossils from the jehol biota not only have important impli-cations for studying the evolution of major Mesozoic vertebrate groups,their paleobiostratigraphy and paleoenvironmentology,but also provide critical evidence for understanding the biodiversity changes of the Early Cretaceous ***,the jehol biota in a narrow sense(i.e.,distribution limited to western Liaoning,northern Hebei,and southeastern Inner Mongolia) comprises a vertebrate assemblage of at least 121 genera and 142 *** them are 13 genera and 15 species of mammals,33 genera and 39 species of birds,30 genera and 35 species of dinosaurs,17 genera and species of pterosaurs,5 genera and species of squamates,5 genera and 7 species of choristoderes,2 genera and species of turtles,8 genera and species of am-phibians,7 genera and 13 species of fishes as well as 1 genus and species of *** these known 121 genera are extinct forms,and only a small percentage of them(e.g.,agnathans,some fishes and amphibians) can be referred to extant *** jehol vertebrate diversity already exceeds that of the contemporaneous lagersttten such as Santana Fauna from Brazil and the Las Hoyas Fauna from Spain,and is nearly as great as that of the Jurassic Solnhofen Fauna and the Eocene Messel Fauna from ***,The jehol biota undoubtedly represents a world class lagerst?tte in terms of both fossil preservation and vertebrate *** success of the jehol vertebrate diversity had a complex biological,geological,and paleoenviron-mental *** of the habitat and diet of various vertebrate groups also indicates that the habitat and dietary dif-ferentiation had played a key role in the success of the taxonomic diversity of vertebrates of various ***,the interactions among vertebrates,plants,and invertebrates as well as the competitions among various vertebrate groups and some key morpholog

关键词： jehol biota Early Cretaceous vertebrate diversity lagersttten

A Mesozoic Pompeii: History of the jehol biota's Rise and Fall

在线全文

学校读者我要写书评

暂无评论

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

The jehol biota, an Early Cretaceous terrestrial Lagerst ¨atte: new discoveries and implications

在线全文

学校读者我要写书评

暂无评论

National Science Review 2014年第4期1卷 543-559页

作者： Zhonghe Zhou Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences

The study of the Early Cretaceous terrestrial jehol biota,which provides a rare window for reconstruction of a Lower Cretaceous terrestrial ecosystem,is reviewed with a focus on some of the latest progress.A newly proposed deinition of the biota based on paleoecology and taphonomy is *** the jehol fossils are mainly preserved in two types of sedimentary rocks,there are various types of preservation with a complex mechanism that remains to be *** discoveries of signiicant taxa from the jehol biota,with an updated introduction of its diversity,conirm that the jehol biota represents one of the most diversiied biotas of the *** evolutionary signiicance of major biological groups(***,birds,mammals,pterosaurs,insects,and plants)is discussed mainly in the light of recent discoveries,and some of the most remarkable aspects of the biota are *** global and local geological,paleogeographic,and paleoenvironmental background of the jehol biota have contributed to the unique composition,evolution,and preservation of the biota,demonstrating widespread faunal exchanges between Asia and other continents caused by the presence of the Eurasia–North American continental mass and its link to South America,and conirming northeastern China as the origin and diversiication center for a variety of Cretaceous biological *** some progress has been made on the reconstruction of the paleotemperature at the time of the jehol biota,much more work is needed to conirm a possible link between the remarkable diversity of the biota and the cold intervals during the Early ***,future directions for the study of the jehol biota are proposed that highlight the great potential of more comprehensive and multidisciplinary studies to further our understanding of the biological and geological implications of the jehol Lagerst¨ate.

关键词： jehol biota Early Cretaceous Lagerst¨ate China terrestrial ecosystem

The jehol biota (Lower Cretaceous, China): new discoveries and future prospects

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Integrative Zoology 2006年第1期1卷 15-17页

作者： Paul M.BARRETT Jason M.HILTON Department of Palaeontology Natural History MuseumLondonUK School of Geography Earth and Environmental SciencesUniversity of BirminghamUK

Continuing work on the paleontology and sedimentology of the jehol Group(Lower Cretaceous,China)is yielding numerous new insights into the evolution of many Mesozoic plant and animal ***,many questions remain unanswered regarding jehol paleoenvironments,paleobiology and *** of this information will be crucial in providing a detailed reconstruction of this extinct ecosystem.

关键词： climate jehol biota paleobotany paleozoology

New Fossil Beetles of the Family Ommatidae (Coleoptera: Archostemata) from the jehol biota of China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2006年第4期80卷 474-485页

作者： TAN Jingjing REN Dong SHIH Chungkun GE Siqin College of Life Sciences Capital Normal University Beijing 100037 Institute of Zoology Chinese Academy of Sciences Beijing 100080

A new genus with one new species and five new species of genus Amblomma of fossil ommatids are described and illustrated： Euryomma tylodes gen. et sp. nov., Amblomma cyclodonta sp. nov., Amblomma miniscula sp. nov., Amblomma porrecta sp. nov., Amblomma eumeura sp. nov., and Amblomma protensa sp. nov. All of them were collected from the Upper Jurassic or Lower Cretaceous Yixian Formation of western Liaoning, China. A key to the species of Amblomma is given. The wide epipleural space shows that Euryomma may be a primitive genus in Ommatidae. Many different species of Amblomma occurred within the same sedimentary horizon in this area could be environmental changes caused by frequent volcanic activities during the deposition of the Yixian Formation.

关键词： Ommatidae jehol biota Late Jurassic Early Cretaceous Yixian Formation Liaoning

A reassessment of Iteravis huchzermeyeri and Gansus zheni from the jehol biota in western Liaoning, China

在线全文

学校读者我要写书评

暂无评论

China Geology 2021年第2期4卷 197-204页

作者： Shu-bin Ju Xu-ri Wang Yi-chuan Liu Yang Wang Institute of Geology Chinese Academy of Geological SciencesKey Laboratory of Stratigraphy and Paleontology of the Ministry of Natural ResourcesBeijing 100037China China University of Geosciences(Beijing) Beijing 100083China

The authors reassessed the taxonomic distinction of Iteravis huchzermeyeri and Gansus zheni,which are two species of Ornithuromorpha based on specimens from the same locality in western Liaoning and derive from the jehol *** detailed comparisons of the holotype and referred specimens of both species,reveal no anatomical features that distinguish these taxa as separate *** minor differences are considered to relate to ontogenetic or interspecific *** stratigraphic occurrence for both specimens is the Lower Cretaceous Jiufotang ***,the authors conclude that Iteravis huchzermeyeri has priority,by 15 days,for this taxon and that Gansus zheni is a junior *** diagnosis of Iteravis huchzermeyeri is revised based on further study on all specimens referred to this *** generic distinction from Gansus is maintained thereby removing a potential genus-level correlation linking Xiagou Formation in Gansu Province with the Jiufotang Formation in Liaoning Province.

关键词： jehol biota Lower Cretaceous Ornithuromorpha Synonym Geological survey engineering Western Liaoning China

Pyrite framboids associated with the Mesozoic jehol biota in northeastern China:Implications for microenvironment during early fossilization

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2003年第3期 48-54页

作者： LENG Qin and YANG Hong (1. Nanjing Institute of Geology & Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China 2. Department of Geological Sciences, Brown University, Providence, RI 02912, USA 3. Department of Science & Technology, Bryant College, Smithfield, RI 02917, USA)

Despite of the recent influx of reports describing important fossil specimens from the Mesozoic jehol biota, detailed in-formation on the mechanism of fossilization and paleoenvironment in which these fossils were deposited is scanty. We present an analysis ofmicroenvironment based upon scanning electron microscope observations of in situ pyrite framboids and microcrystallines of plant and ver-tebrate feather fossils in the jehol biota. Pyrite microcrystallines and framboids occur extensively inside and on surface of plant *** found on feathers and in sedimentary matrix were in a lower abundance. These framboids have diameters ranging from 6 μm to31μm with an average of 20μm, indicating a dysoxic aqueous condition with free oxygen level less than 30μmol/L for the microenviron-ment where these framboids were formed. The outgrowth of framboids inside plant tissues suggests the presence of water molecules andfree oxygen at the cellular level during pyritization; the relative timing betwee

关键词： framboid jehol biota microenvironment.