Palaeoworld最新文献

{"title":"The bivalved arthropod Caudicaella aff. bispinata from the Heatherdale Shale (Cambrian Stage 3), South Australia","authors":"Fei-Yang Chen ,&nbsp;Marissa J. Betts ,&nbsp;Zhi-Liang Zhang ,&nbsp;Glenn A. Brock","doi":"10.1016/j.palwor.2024.09.006","DOIUrl":"10.1016/j.palwor.2024.09.006","url":null,"abstract":"<div><div>Sunellids are early Cambrian bivalved arthropods first recognized in South China that are important for understanding the early evolution of the group. However, their taxonomic affinity and distribution beyond South China is poorly known. Furthermore, the relationship between members of the Sunellidae and the globally dispersed <em>Isoxys</em> remains unclear. Recently, rare specimens of the sunellid <em>Caudicaella</em> aff. <em>bispinata</em> have been recovered from the lower Cambrian (Series 2, Stage 3) Heatherdale Shale, eastern Stansbury Basin, South Australia, representing the first record of the group from East Gondwana. <em>Caudicaella</em> aff. <em>bispinata</em> from Australia bears a semicircular carapace, a pair of anterodorsal sulci, anterior and posterior cardinal spines, as well as a distinct thick border or margin. It most closely resembles <em>Caudicaella bispinata</em> from the Shuijingtuo Formation in western Hubei Province, South China. The new discovery adds support for strong faunal similarity of the Konservat-Lagerstätten of South Australia and South China and extends the known geographical range of Cambrian sunellids to East Gondwana. The occurrence of <em>Caudicaella bispinata</em> in South China and <em>Caudicaella</em> aff. <em>bispinata</em> in East Gondwana strengthens the biostratigraphic correlation between those two palaeo-continents.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100882"},"PeriodicalIF":1.7,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New Ordovician bivalves from the Indochina Palaeoplate in Dali, western Yunnan, Southwest China and their palaeogeographic significance","authors":"Yong Wang ,&nbsp;Zong-Jie Fang ,&nbsp;David A.T. Harper ,&nbsp;Yu-Chen Zhang ,&nbsp;Xin Wei ,&nbsp;Guang-Xu Wang ,&nbsp;Ren-Bin Zhan","doi":"10.1016/j.palwor.2024.09.007","DOIUrl":"10.1016/j.palwor.2024.09.007","url":null,"abstract":"<div><div>A centre of radiation for Ordovician bivalves is identified based on an abundant and diverse fauna from the Hsiangyang Formation (Darriwilian, Middle Ordovician) of Dali, western Yunnan, Southwest China. It consists of 22 species of 18 genera including 1) one new genus and four new species: <em>Rhomboconcha tresdentes</em> n. gen. n. sp., <em>Fasciculodonta curvata</em> n. sp., <em>Glyptarca symmetrica</em> n. sp., and <em>Paracyclas initium</em> n. sp.; 2) three taxa known from elsewhere but initially found in Dali: <em>Praeleda</em> sp., <em>Glyptarca</em> sp., and <em>Redonia deshayesi</em>; 3) other taxa previously reported by <span><span>Fang and Cope (2004)</span></span>. Numerical analysis of the distribution of 11 Middle Ordovician bivalve faunas from different regions shows two distinct faunal groups, the HPL group, representing the bivalves that lived in higher palaeolatitudes, and the LPL group (including Australia and South China) in lower palaeolatitudes. The bivalve fauna from Dali correlates with both groups, indicating that the Indochina Palaeoplate was located between these two groups, and in middle–high palaeolatitudes. Thus, the Indochina Palaeoplate was probably an isolated centre for bivalve radiation during the Middle Ordovician; those genera confined to Dali did not then spread to other palaeoplates.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100883"},"PeriodicalIF":1.7,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural analysis of fossilized tree trunks from the Miocene Mydlovary Formation of the South Bohemian Basin (Czech Republic)","authors":"Martina Havelcová ,&nbsp;Ivana Sýkorová ,&nbsp;Petr Rajlich","doi":"10.1016/j.palwor.2024.10.002","DOIUrl":"10.1016/j.palwor.2024.10.002","url":null,"abstract":"<div><div>Tree trunks were found in situ in Miocene strata of the Mydlovary Formation of the South Bohemian Basin. Our study presents microscopic and chemical tissue analyses of these tree trunks. The trees were fossilized and flattened. However, they are well preserved, which made the analyses feasible. Good preservation of the tissues is indicated by the high Tissue Preservation Index, the high content of cellulose, and the slightly gelified state of the wood. The Gelification Index indicated that there was only limited alteration during diagenesis. Huminite macerals prevailed over liptinite and inertinite macerals, and two varieties of ulminite and textinite were distinguished, differing in colour reflection, light fluorescence, and reflectance values. The biomarker composition in the extracts of the fossil wood obtained by gas chromatography-mass spectrometry, included terpenoid signatures, supporting a relationship to the Family Cupressaceae s.s.. Gradual burial of the trees is indicated by the fact that they lay crosswise on top of each other. The character of the sedimentary environment and the physiological differences of the trees could explain the deformation and the high degree of preservation.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100886"},"PeriodicalIF":1.7,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiolarians from Cambrian Series 2 Niujiaohe Formation in southern Jiangxi, South China","authors":"Teng Huang ,&nbsp;Qiang-Fen Ma ,&nbsp;Xiao-Xin Dong ,&nbsp;Guo-Zhen Xu ,&nbsp;Yu-Hao Yi","doi":"10.1016/j.palwor.2024.09.008","DOIUrl":"10.1016/j.palwor.2024.09.008","url":null,"abstract":"<div><div>The origin and early evolution of radiolarian fossils have always provoked great interest among paleontologists. Yet, little is known about the earliest morphological and evolutionary characteristics of radiolarians largely due to the lack of documentation of early Cambrian radiolarian fossils. Herein, we conduct a thorough examination of the basinal Niujiaohe Formation in Chongyi County of southern Jiangxi and report two types of radiolarians: a large number of spherical radiolarians and a minor occurrence of ellipsoidal radiolarian fossils with bipolar rodded spines. The lengths of the spines on ellipsoid radiolarian fossils vary, and typically, the main spines are slightly offset from the polar axis, resulting in an asymmetrical appearance in some specimens. Through systematic taxonomic examination, this radiolarian fossil form is tentatively identified as <em>Beothuka</em> sp. of the spherical polycystine group. The genus <em>Beothuka</em> is commonly found in the Early Ordovician and has not yet been reported in the early Cambrian. Combined with previous reports, four species of radiolarians in three genera are identified from the Niujiaohe Formation in South China, including <em>Paraantygopora porosa</em>, <em>Paraantygopora</em> sp., spherical radiolarian, and <em>Beothuka</em> sp. Overall, the radiolarian fossils in the Niujiaohe Formation are characterized by low diversity and small size, in contrast to the relatively more diverse fauna found in the contemporary shallow-water Shuijingtuo Formation. Therefore, we speculate that radiolarians may have initially originated in shallow water areas and gradually expanded to deep water. This study further enriches the fossil record of the Cambrian Series 2 radiolarians. Combined with relevant data from South China, the radiolarian fauna began to exhibit diversity and complex morphology, indicating the presence of various, advanced spherical-skeletons in early radiolarians, and radiolarians from the early Cambrian appeared to display multiple evolutionary trends.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100884"},"PeriodicalIF":1.7,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First palynological evidence from the Upper Devonian of Armenia (northern Gondwanan margin): biostratigraphic implications","authors":"Sirush Khachatryan ,&nbsp;Borja Cascales-Miñana ,&nbsp;Taniel Danelian ,&nbsp;Pierre Breuer ,&nbsp;Philippe Steemans ,&nbsp;Araik Grigoryan ,&nbsp;Ivan Gabrielyan ,&nbsp;Vachik Hairapetian ,&nbsp;Sylvie Regnier ,&nbsp;David Marius Kroeck ,&nbsp;Vahram Serobyan","doi":"10.1016/j.palwor.2024.09.003","DOIUrl":"10.1016/j.palwor.2024.09.003","url":null,"abstract":"<div><div>Diverse and abundant terrestrial palynomorphs are recovered from a Frasnian–Famennian (F-F) succession of shales in the Ertych section, situated in central Armenia. They represent the first discovery of spores from the F-F shallow marine sedimentary sequences of the South Armenian Block, which at that time was part of the northern Gondwanan continental margin. Their taxonomic assessment recognizes 37 spore taxa assigned to 22 genera. Notably, the presence of <em>Teichertospora torquata</em> allows us to assign the entire studied succession to the <em>torquata–gracilis</em> zone, indicating a late Frasnian to early Famennian age. In addition, the occurrence of <em>Acinosporites lindlarensis</em>, which corresponds to the spores of the herbaceous lycophyte <em>Leclercqia</em>, suggests that the age of the studied succession should be further restricted to the late Frasnian. The presence of chitinozoans (i.e., <em>Angochitina mourai</em>) in the studied interval argues for marine deposition. Our biostratigraphic results provide a more coherent picture for the sedimentary evolution of this Frasnian–Famennian sequence arguing for a rather uninterrupted sedimentation close to the critical boundary interval. The identified spore assemblage highlights the close affinity of the Frasnian vegetation preserved in Armenia with other parts of the Northern Gondwana and southern Laurentia. We provide the first evidence of the occurrence of <em>Kraeuselisporites ollii</em> outside Canada and extend its known age range to the late Frasnian.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100879"},"PeriodicalIF":1.7,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new marsupialiform from Upper Cretaceous of Songliao Basin, Heilongjiang, China","authors":"Yuan Gao ,&nbsp;Wen-Hao Wu ,&nbsp;Fang-Yuan Mao","doi":"10.1016/j.palwor.2024.09.004","DOIUrl":"10.1016/j.palwor.2024.09.004","url":null,"abstract":"<div><div>The fossil record of marsupialiforms in the Upper Cretaceous of Asia is scarce, without previous discoveries in China until the current study. Here we report a new marsupialiform, <em>Solatherium nenjiangensis</em> n. gen. n. sp., based on three lower left molars found in the early Campanian Nenjiang Formation at the Bei’an locality of Songliao Basin. The lower molars of <em>S</em>. <em>nenjiangensis</em> exhibit a well-developed entoconid, which is significantly larger than the hypoconulid and the twined entoconid-hypoconulid that is lingually positioned; the entoconid is taller than the hypoconid. These characteristics are consistent with the lower molars of “pediomyids”, placing <em>S</em>. <em>nenjiangensis</em> within the Family “Pediomyidae”. Furthermore, a marsupialiform lower molar is identified as an undetermined species due to its distinct features from those of <em>S</em>. <em>nenjiangensis</em>, indicating a different taxon. This discovery marks the first occurrence of marsupialiform teeth in China and potentially represents the initial recognition of “pediomyids” in Asia, enhancing our understanding of the geographic distribution of marsupialiforms and offering valuable insights into the evolution and migration of metatherians.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100880"},"PeriodicalIF":1.7,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143155520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Moscovian–Kasimovian boundary problem in the Northern Urals: A case study of the Moleben-Iz Section, Ilych River","authors":"Evgeniy S. Ponomarenko ,&nbsp;Rimma M. Ivanova","doi":"10.1016/j.palwor.2024.09.005","DOIUrl":"10.1016/j.palwor.2024.09.005","url":null,"abstract":"<div><div>The Kasimovian lower boundary is usually determined by the first appearance of <em>Obsoletes</em> and advanced <em>Protriticites</em> fusulinids; however, this criterion is not always met. In the northern part of the Urals and Pai-Khoi, the Moscovian–Kasimovian boundary is determined by the abrupt appearance of fusulinids of the Subfamily Pulchrellinae. In this paper we present results of our study of the Moleben-Iz section, in an attempt to define the Moscovian–Kasimovian boundary. In this section, the upper Moscovian and lower Kasimovian deposits are represented by shallow-marine carbonates, including a diverse fusulinid complex. The most important stratigraphic level here is the lower part of bed 6, characterized by the abrupt appearance of the fusulinids <em>Kanmeraia</em>, <em>Eowaeringella</em> and <em>Dagmarella</em>. This level is also associated with the diversification of <em>Usvaella</em> (species <em>U</em>. <em>plicata</em> (Shamov and Shcherbovich) and <em>U</em>. <em>porifera</em> Remizova appear) and <em>Pulchrella</em> (<em>Pul</em>. <em>whitensis</em> (Ross and Sabins), <em>Pul</em>. <em>hayasakai</em> (Watanabe), and <em>Pul</em>. <em>pokojamensis</em> (Lebedeva) appear). The later appearance of <em>Obsoletes obsoletus</em> may be related to the later migration of this species from the Russian platform to the Urals. Placement of the Kasimovian lower boundary in the Northern Urals and Pai-Khoi at the base of the <em>Kanmeraia ozawai</em>-<em>Usvaella usvae</em> Biozone allows us to correlate this boundary with the Missourian base of the North American continent.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100881"},"PeriodicalIF":1.7,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New Jurassic notocupedins (Coleoptera: Archostemata: Ommatidae) from the Qinghai-Xizang (Tibetan) Plateau","authors":"Zhen-Yu Song ,&nbsp;Edmund A. Jarzembowski ,&nbsp;Chuan-Tao Xiao ,&nbsp;Ai-Ying Yang","doi":"10.1016/j.palwor.2024.09.002","DOIUrl":"10.1016/j.palwor.2024.09.002","url":null,"abstract":"<div><div>Beetles belonging to the extinct tribe Notocupedini (Archostemata: Ommatidae) are widespread in Mesozoic deposits. Two new Early Jurassic species in the first reported Mesozoic insect assemblage from the Qinghai-Xizang (Tibetan) Plateau are proposed in the genus/collective group <em>Zygadenia</em>. <em>Zygadenia dachaidanensis</em> n. sp. can be distinguished from other congeners based on a combination of small size, oval head, large eyes, absence of longitudinal suture on metasternum, slightly narrowed elytron below humerus, maculated round window cells, and sub-rectangular scutellum; <em>Zygadenia haixiensis</em> n. sp. can be distinguished from other congeners based on a combination of elongated head, uniquely contracted ventrite 5, metasternum with longitudinal suture and elytron without prominent longitudinal veins. The two species represent the first record of Archostemata from the Qinghai-Xizang Plateau, extending the palaeogeographical distribution of Archostemata, and are important an aid to the reconstruction of the Early Jurassic swamp ecosystem in the Qinghai-Xizang Plateau.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 100878"},"PeriodicalIF":1.7,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biostratigraphy of the early Cambrian small skeletal fossils from the Niuniuzhai section of southern Sichuan in China","authors":"Lei Yang ,&nbsp;Ben Yang ,&nbsp;Yu-Ning Yang ,&nbsp;Michael Steiner","doi":"10.1016/j.palwor.2024.09.001","DOIUrl":"10.1016/j.palwor.2024.09.001","url":null,"abstract":"<div><div>The Niuniuzhai section in Leibo County, southern Sichuan, China, is part of the western carbonate platform of the Yangtze Block. The section is crucial for correlating early Cambrian successions in the eastern Yunnan and southern Sichuan areas. A comprehensive biostratigraphic analysis of small skeletal fossils (SSFs) from this section identifies three SSF assemblages: (1) the oldest from an interval of uncertain age affinity in the middle and upper Dahai Member of the Zhujiaqing Formation; (2) the <em>Watsonella crosbyi</em> Assemblage Zone (Zone III) in the upper Dahai Member of the Zhujiaqing Formation; and (3) the <em>Sinosachites flabelliformis</em>–<em>Tannuolina zhangwentangi</em> Assemblage Zone (Zone IV) in the middle Shiyantou Formation. These SSF assemblage zones in the Niuniuzhai section correlate well with sections from eastern Yunnan and southern Sichuan, indicating a coherent Terreneuvian succession on the the Yangtze Platform and in other continents.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100877"},"PeriodicalIF":1.7,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ginkgoites manchurica from the Lower Cretaceous Shahezi Formation of Liaoning, China, and its palaeoclimate implications","authors":"Yan Liu ,&nbsp;Qiao-Er Ying ,&nbsp;Qi-Jia Li ,&nbsp;Ning Zhou ,&nbsp;Cao Zhang ,&nbsp;Yu-Jin Zhang ,&nbsp;Xiao Tan ,&nbsp;Fei Liang","doi":"10.1016/j.palwor.2024.100876","DOIUrl":"10.1016/j.palwor.2024.100876","url":null,"abstract":"<div><div>The extreme greenhouse climate during the period of oceanic anoxic events (OAEs) in the Cretaceous is recognized based on marine stratigraphy, whereas the palaeoclimate remains poorly understood based on the terrestrial record due to the limitations of quantitative methods. The nearest living equivalent method, such as using the stomatal index of <em>Ginkgo</em> as a proxy, provides insight into reconstructing the terrestrial palaeoclimate during OAEs. However, due to the lack of well-preserved fossils with epidermal features and applicable quantitative methods, there are still controversies regarding the classification and nomenclature of species in the genus <em>Ginkgoites</em>, which have been assigned to <em>Baiera</em>, <em>Ginkgo</em>, or <em>Ginkgoites</em>. Here, we report well-preserved <em>Ginkgoites</em> fossil leaves from the Lower Cretaceous Shahezi Formation in Changtu County, Liaoning Province, Northeast China. The fossil dry leaf mass per area (LMA) was estimated as a quantitative morphological and ecological proxy. The LMA results of 192–241 g/m² for different specimens are very close, suggesting that these homonyms should be assigned to the same species. Therefore, combining the detailed epidermal features and a quantitative morphological proxy (LMA), we summarized and amended the previously described fossils into <em>Ginkgoites manchurica</em>. Moreover, using the stomatal index of <em>G</em>. <em>manchurica</em>, the palaeo-atmospheric CO₂ concentration was calculated at 1270 ppmv using the Barclay SI-<em>p</em>CO₂ curve during the middle to late Aptian, indicating a typical greenhouse climate, which may be associated with the OAE global temperature increase event.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 2","pages":"Article 100876"},"PeriodicalIF":1.7,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}